diff --git a/LICENSE b/LICENSE
index 261eeb9..40771c5 100644
--- a/LICENSE
+++ b/LICENSE
@@ -186,7 +186,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright [yyyy] [name of copyright owner]
+   Copyright 2023 viadee IT-Unternehmensberatung AG
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
diff --git a/pom.xml b/pom.xml
index cf0e3e7..364904f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,8 +6,33 @@
 
     <groupId>de.viadee</groupId>
     <artifactId>apiunit</artifactId>
+    <name>ApiUnit</name>
+    <description>ApiUnit is a free and simple library for checking REST API guidelines of your Java code.
+    </description>
     <version>0.1.0-SNAPSHOT</version>
 
+    <organization>
+        <name>viadee Unternehmensberatung AG</name>
+        <url>https://www.viadee.de</url>
+    </organization>
+
+    <url>https://github.com/viadee/apiunit</url>
+
+    <developers>
+        <developer>
+            <name>Steffen Lammers</name>
+            <email>steffen.lammers@viadee.de</email>
+            <organization>viadee Unternehmensberatung AG</organization>
+            <organizationUrl>http://www.viadee.de</organizationUrl>
+        </developer>
+    </developers>
+
+    <scm>
+        <connection>scm:git:git@github.com/viadee/apiunit.git</connection>
+        <developerConnection>scm:git:git@github.com/viadee/apiunit.git</developerConnection>
+        <url>git@github.com/viadee/apiunit.git</url>
+    </scm>
+
     <properties>
         <java.version>17</java.version>
         <spring-boot.version>3.1.3</spring-boot.version>
@@ -18,6 +43,8 @@
         <maven-source.version>3.3.0</maven-source.version>
         <maven-gpg.version>3.1.0</maven-gpg.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <license-maven.version>4.2</license-maven.version>
+        <maven-javadoc.version>3.6.0</maven-javadoc.version>
     </properties>
 
     <dependencies>
@@ -120,6 +147,68 @@
                     <target>${java.version}</target>
                 </configuration>
             </plugin>
+
+            <plugin>
+                <groupId>com.mycila</groupId>
+                <artifactId>license-maven-plugin</artifactId>
+                <version>${license-maven.version}</version>
+                <configuration>
+                    <header>src/main/resources/Apache 2.0 License.txt</header>
+                    <properties>
+                        <owner>viadee Unternehmensberatung AG</owner>
+                        <inceptionYear>2023</inceptionYear>
+                        <email>steffen.lammers@viadee.de</email>
+                    </properties>
+                    <mapping>
+                        <java>SLASHSTAR_STYLE</java>
+                    </mapping>
+                    <excludes>
+                        <exclude>**/README</exclude>
+                        <exclude>src/test/resources/**</exclude>
+                        <exclude>src/main/resources/**</exclude>
+                        <exclude>src/main/resources-filtered/**</exclude>
+                        <exclude>docs/**</exclude>
+                        <exclude>src/main/java/**/*.properties</exclude>
+                        <exclude>*.xml</exclude>
+                        <exclude>*.yml</exclude>
+                        <exclude>*.log</exclude>
+                        <exclude>*.pmd</exclude>
+                        <exclude>LICENSE.txt</exclude>
+                    </excludes>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>Check licenses</id>
+                        <goals>
+                            <goal>check</goal>
+                        </goals>
+                    </execution>
+                    <execution>
+                        <id>Insert or update license</id>
+                        <phase>generate-sources</phase>
+                        <goals>
+                            <goal>format</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-javadoc-plugin</artifactId>
+                <version>${maven-javadoc.version}</version>
+                <configuration>
+                    <detectJavaApiLink>false</detectJavaApiLink>
+                </configuration>
+                <executions>
+                    <execution>
+                        <id>attach-javadocs</id>
+                        <goals>
+                            <goal>jar</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
         </plugins>
     </build>
 
@@ -133,4 +222,11 @@
             <url>https://oss.sonatype.org/service/local/staging/deploy/maven2</url>
         </repository>
     </distributionManagement>
+
+    <licenses>
+        <license>
+            <name>Apache-2.0</name>
+            <url>https://www.apache.org/licenses/LICENSE-2.0.txt</url>
+        </license>
+    </licenses>
 </project>
\ No newline at end of file
diff --git a/src/main/java/de/viadee/apiunit/ApiRule.java b/src/main/java/de/viadee/apiunit/ApiRule.java
index ca6fe9d..cee4375 100644
--- a/src/main/java/de/viadee/apiunit/ApiRule.java
+++ b/src/main/java/de/viadee/apiunit/ApiRule.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit;
 
 import com.tngtech.archunit.core.domain.JavaClasses;
diff --git a/src/main/java/de/viadee/apiunit/ApiRuleCheck.java b/src/main/java/de/viadee/apiunit/ApiRuleCheck.java
index b934da5..eda4f47 100644
--- a/src/main/java/de/viadee/apiunit/ApiRuleCheck.java
+++ b/src/main/java/de/viadee/apiunit/ApiRuleCheck.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit;
 
 public class ApiRuleCheck {
diff --git a/src/main/java/de/viadee/apiunit/ApiUnitTest.java b/src/main/java/de/viadee/apiunit/ApiUnitTest.java
index 46062f6..6e980f9 100644
--- a/src/main/java/de/viadee/apiunit/ApiUnitTest.java
+++ b/src/main/java/de/viadee/apiunit/ApiUnitTest.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit;
 
 import com.tngtech.archunit.core.domain.JavaClasses;
diff --git a/src/main/java/de/viadee/apiunit/ApiUnitTestResultObject.java b/src/main/java/de/viadee/apiunit/ApiUnitTestResultObject.java
index c48e294..6127851 100644
--- a/src/main/java/de/viadee/apiunit/ApiUnitTestResultObject.java
+++ b/src/main/java/de/viadee/apiunit/ApiUnitTestResultObject.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit;
 
 import java.util.ArrayList;
diff --git a/src/main/java/de/viadee/apiunit/rules/CollectionIdsMustBeLowerCamelCase.java b/src/main/java/de/viadee/apiunit/rules/CollectionIdsMustBeLowerCamelCase.java
index 09113eb..d4af1ed 100644
--- a/src/main/java/de/viadee/apiunit/rules/CollectionIdsMustBeLowerCamelCase.java
+++ b/src/main/java/de/viadee/apiunit/rules/CollectionIdsMustBeLowerCamelCase.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit.rules;
 
 public class CollectionIdsMustBeLowerCamelCase extends CollectionIdsMustMatchExpression {
diff --git a/src/main/java/de/viadee/apiunit/rules/CollectionIdsMustBeValidCIdentifier.java b/src/main/java/de/viadee/apiunit/rules/CollectionIdsMustBeValidCIdentifier.java
index 5bbb3e9..2c8feee 100644
--- a/src/main/java/de/viadee/apiunit/rules/CollectionIdsMustBeValidCIdentifier.java
+++ b/src/main/java/de/viadee/apiunit/rules/CollectionIdsMustBeValidCIdentifier.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit.rules;
 
 public class CollectionIdsMustBeValidCIdentifier extends CollectionIdsMustMatchExpression {
diff --git a/src/main/java/de/viadee/apiunit/rules/CollectionIdsMustMatchExpression.java b/src/main/java/de/viadee/apiunit/rules/CollectionIdsMustMatchExpression.java
index 2143074..a5198ae 100644
--- a/src/main/java/de/viadee/apiunit/rules/CollectionIdsMustMatchExpression.java
+++ b/src/main/java/de/viadee/apiunit/rules/CollectionIdsMustMatchExpression.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit.rules;
 
 import com.tngtech.archunit.core.domain.JavaClass;
diff --git a/src/main/java/de/viadee/apiunit/rules/EnumerationTypesMustBeUpperCamelCase.java b/src/main/java/de/viadee/apiunit/rules/EnumerationTypesMustBeUpperCamelCase.java
index 9bb3d51..37b55d2 100644
--- a/src/main/java/de/viadee/apiunit/rules/EnumerationTypesMustBeUpperCamelCase.java
+++ b/src/main/java/de/viadee/apiunit/rules/EnumerationTypesMustBeUpperCamelCase.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit.rules;
 
 import com.tngtech.archunit.core.domain.JavaClass;
diff --git a/src/main/java/de/viadee/apiunit/rules/EnumerationValuesMustBeCapitalizedNamesWithUnderscores.java b/src/main/java/de/viadee/apiunit/rules/EnumerationValuesMustBeCapitalizedNamesWithUnderscores.java
index 821b979..1b5c3c9 100644
--- a/src/main/java/de/viadee/apiunit/rules/EnumerationValuesMustBeCapitalizedNamesWithUnderscores.java
+++ b/src/main/java/de/viadee/apiunit/rules/EnumerationValuesMustBeCapitalizedNamesWithUnderscores.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit.rules;
 
 import com.tngtech.archunit.core.domain.JavaClass;
diff --git a/src/main/java/de/viadee/apiunit/rules/HttpDeleteMethodsMustNotHaveRequestBody.java b/src/main/java/de/viadee/apiunit/rules/HttpDeleteMethodsMustNotHaveRequestBody.java
index 95ce7f6..8224e3d 100644
--- a/src/main/java/de/viadee/apiunit/rules/HttpDeleteMethodsMustNotHaveRequestBody.java
+++ b/src/main/java/de/viadee/apiunit/rules/HttpDeleteMethodsMustNotHaveRequestBody.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit.rules;
 
 import com.tngtech.archunit.core.domain.JavaClass;
diff --git a/src/main/java/de/viadee/apiunit/rules/HttpGetMethodsMustNotHaveRequestBody.java b/src/main/java/de/viadee/apiunit/rules/HttpGetMethodsMustNotHaveRequestBody.java
index 9df2e61..d9693c2 100644
--- a/src/main/java/de/viadee/apiunit/rules/HttpGetMethodsMustNotHaveRequestBody.java
+++ b/src/main/java/de/viadee/apiunit/rules/HttpGetMethodsMustNotHaveRequestBody.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit.rules;
 
 import com.tngtech.archunit.core.domain.JavaClass;
diff --git a/src/main/java/de/viadee/apiunit/rules/HttpPatchMethodsMustHaveRequestBody.java b/src/main/java/de/viadee/apiunit/rules/HttpPatchMethodsMustHaveRequestBody.java
index 993955b..4c00135 100644
--- a/src/main/java/de/viadee/apiunit/rules/HttpPatchMethodsMustHaveRequestBody.java
+++ b/src/main/java/de/viadee/apiunit/rules/HttpPatchMethodsMustHaveRequestBody.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit.rules;
 
 import com.tngtech.archunit.core.domain.JavaClass;
diff --git a/src/main/java/de/viadee/apiunit/rules/HttpPostMethodsMustHaveRequestBody.java b/src/main/java/de/viadee/apiunit/rules/HttpPostMethodsMustHaveRequestBody.java
index 0234020..f3da2e9 100644
--- a/src/main/java/de/viadee/apiunit/rules/HttpPostMethodsMustHaveRequestBody.java
+++ b/src/main/java/de/viadee/apiunit/rules/HttpPostMethodsMustHaveRequestBody.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit.rules;
 
 import com.tngtech.archunit.core.domain.JavaClass;
diff --git a/src/main/java/de/viadee/apiunit/rules/HttpPutMethodsMustHaveRequestBody.java b/src/main/java/de/viadee/apiunit/rules/HttpPutMethodsMustHaveRequestBody.java
index 17e15a1..23dcfa5 100644
--- a/src/main/java/de/viadee/apiunit/rules/HttpPutMethodsMustHaveRequestBody.java
+++ b/src/main/java/de/viadee/apiunit/rules/HttpPutMethodsMustHaveRequestBody.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit.rules;
 
 import com.tngtech.archunit.core.domain.JavaClass;
diff --git a/src/main/java/de/viadee/apiunit/rules/Utils.java b/src/main/java/de/viadee/apiunit/rules/Utils.java
index 988820e..93d8b6f 100644
--- a/src/main/java/de/viadee/apiunit/rules/Utils.java
+++ b/src/main/java/de/viadee/apiunit/rules/Utils.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit.rules;
 
 import com.tngtech.archunit.core.domain.JavaClass;
diff --git a/src/main/resources/Apache 2.0 License.txt b/src/main/resources/Apache 2.0 License.txt
new file mode 100644
index 0000000..dbb51a2
--- /dev/null
+++ b/src/main/resources/Apache 2.0 License.txt	
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright 2023 viadee IT-Unternehmensberatung AG
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
\ No newline at end of file
diff --git a/src/test/java/de/viadee/apiunit/ExampleUsages.java b/src/test/java/de/viadee/apiunit/ExampleUsages.java
index 5ecb0c9..358ef4a 100644
--- a/src/test/java/de/viadee/apiunit/ExampleUsages.java
+++ b/src/test/java/de/viadee/apiunit/ExampleUsages.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit;
 import de.viadee.apiunit.rules.*;
 import org.junit.jupiter.api.Test;
diff --git a/src/test/java/de/viadee/apiunit/demo/Book.java b/src/test/java/de/viadee/apiunit/demo/Book.java
index cfd4e43..9af1b4c 100644
--- a/src/test/java/de/viadee/apiunit/demo/Book.java
+++ b/src/test/java/de/viadee/apiunit/demo/Book.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit.demo;
 
 import java.util.Objects;
diff --git a/src/test/java/de/viadee/apiunit/demo/BookController.java b/src/test/java/de/viadee/apiunit/demo/BookController.java
index 17f4e0c..7ba5b3c 100644
--- a/src/test/java/de/viadee/apiunit/demo/BookController.java
+++ b/src/test/java/de/viadee/apiunit/demo/BookController.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit.demo;
 
 import org.springframework.web.bind.annotation.*;
diff --git a/src/test/java/de/viadee/apiunit/demo/Dvd.java b/src/test/java/de/viadee/apiunit/demo/Dvd.java
index 1740204..4ae01c8 100644
--- a/src/test/java/de/viadee/apiunit/demo/Dvd.java
+++ b/src/test/java/de/viadee/apiunit/demo/Dvd.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit.demo;
 
 import java.util.Objects;
diff --git a/src/test/java/de/viadee/apiunit/demo/DvdController.java b/src/test/java/de/viadee/apiunit/demo/DvdController.java
index 9c2fbef..d249917 100644
--- a/src/test/java/de/viadee/apiunit/demo/DvdController.java
+++ b/src/test/java/de/viadee/apiunit/demo/DvdController.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit.demo;
 
 import org.springframework.web.bind.annotation.*;
diff --git a/src/test/java/de/viadee/apiunit/demo/FilterObject.java b/src/test/java/de/viadee/apiunit/demo/FilterObject.java
index 50bdf8e..9687650 100644
--- a/src/test/java/de/viadee/apiunit/demo/FilterObject.java
+++ b/src/test/java/de/viadee/apiunit/demo/FilterObject.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit.demo;
 
 public class FilterObject {
diff --git a/src/test/java/de/viadee/apiunit/demo/Genre.java b/src/test/java/de/viadee/apiunit/demo/Genre.java
index 2a76416..043d97c 100644
--- a/src/test/java/de/viadee/apiunit/demo/Genre.java
+++ b/src/test/java/de/viadee/apiunit/demo/Genre.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit.demo;
 
 public enum Genre {
diff --git a/src/test/java/de/viadee/apiunit/demo/RequestBodyBook.java b/src/test/java/de/viadee/apiunit/demo/RequestBodyBook.java
index 5ffe9d1..8a864ce 100644
--- a/src/test/java/de/viadee/apiunit/demo/RequestBodyBook.java
+++ b/src/test/java/de/viadee/apiunit/demo/RequestBodyBook.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit.demo;
 
 import java.util.Objects;
diff --git a/src/test/java/de/viadee/apiunit/demo/Shelf.java b/src/test/java/de/viadee/apiunit/demo/Shelf.java
index 9050557..fbf2e4a 100644
--- a/src/test/java/de/viadee/apiunit/demo/Shelf.java
+++ b/src/test/java/de/viadee/apiunit/demo/Shelf.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit.demo;
 
 import java.util.HashSet;
diff --git a/src/test/java/de/viadee/apiunit/demo/ShelfController.java b/src/test/java/de/viadee/apiunit/demo/ShelfController.java
index 976f23f..d639724 100644
--- a/src/test/java/de/viadee/apiunit/demo/ShelfController.java
+++ b/src/test/java/de/viadee/apiunit/demo/ShelfController.java
@@ -1,3 +1,207 @@
+/*
+ *
+ *                                  Apache License
+ *                            Version 2.0, January 2004
+ *                         http://www.apache.org/licenses/
+ *
+ *    TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+ *
+ *    1. Definitions.
+ *
+ *       "License" shall mean the terms and conditions for use, reproduction,
+ *       and distribution as defined by Sections 1 through 9 of this document.
+ *
+ *       "Licensor" shall mean the copyright owner or entity authorized by
+ *       the copyright owner that is granting the License.
+ *
+ *       "Legal Entity" shall mean the union of the acting entity and all
+ *       other entities that control, are controlled by, or are under common
+ *       control with that entity. For the purposes of this definition,
+ *       "control" means (i) the power, direct or indirect, to cause the
+ *       direction or management of such entity, whether by contract or
+ *       otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ *       outstanding shares, or (iii) beneficial ownership of such entity.
+ *
+ *       "You" (or "Your") shall mean an individual or Legal Entity
+ *       exercising permissions granted by this License.
+ *
+ *       "Source" form shall mean the preferred form for making modifications,
+ *       including but not limited to software source code, documentation
+ *       source, and configuration files.
+ *
+ *       "Object" form shall mean any form resulting from mechanical
+ *       transformation or translation of a Source form, including but
+ *       not limited to compiled object code, generated documentation,
+ *       and conversions to other media types.
+ *
+ *       "Work" shall mean the work of authorship, whether in Source or
+ *       Object form, made available under the License, as indicated by a
+ *       copyright notice that is included in or attached to the work
+ *       (an example is provided in the Appendix below).
+ *
+ *       "Derivative Works" shall mean any work, whether in Source or Object
+ *       form, that is based on (or derived from) the Work and for which the
+ *       editorial revisions, annotations, elaborations, or other modifications
+ *       represent, as a whole, an original work of authorship. For the purposes
+ *       of this License, Derivative Works shall not include works that remain
+ *       separable from, or merely link (or bind by name) to the interfaces of,
+ *       the Work and Derivative Works thereof.
+ *
+ *       "Contribution" shall mean any work of authorship, including
+ *       the original version of the Work and any modifications or additions
+ *       to that Work or Derivative Works thereof, that is intentionally
+ *       submitted to Licensor for inclusion in the Work by the copyright owner
+ *       or by an individual or Legal Entity authorized to submit on behalf of
+ *       the copyright owner. For the purposes of this definition, "submitted"
+ *       means any form of electronic, verbal, or written communication sent
+ *       to the Licensor or its representatives, including but not limited to
+ *       communication on electronic mailing lists, source code control systems,
+ *       and issue tracking systems that are managed by, or on behalf of, the
+ *       Licensor for the purpose of discussing and improving the Work, but
+ *       excluding communication that is conspicuously marked or otherwise
+ *       designated in writing by the copyright owner as "Not a Contribution."
+ *
+ *       "Contributor" shall mean Licensor and any individual or Legal Entity
+ *       on behalf of whom a Contribution has been received by Licensor and
+ *       subsequently incorporated within the Work.
+ *
+ *    2. Grant of Copyright License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       copyright license to reproduce, prepare Derivative Works of,
+ *       publicly display, publicly perform, sublicense, and distribute the
+ *       Work and such Derivative Works in Source or Object form.
+ *
+ *    3. Grant of Patent License. Subject to the terms and conditions of
+ *       this License, each Contributor hereby grants to You a perpetual,
+ *       worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ *       (except as stated in this section) patent license to make, have made,
+ *       use, offer to sell, sell, import, and otherwise transfer the Work,
+ *       where such license applies only to those patent claims licensable
+ *       by such Contributor that are necessarily infringed by their
+ *       Contribution(s) alone or by combination of their Contribution(s)
+ *       with the Work to which such Contribution(s) was submitted. If You
+ *       institute patent litigation against any entity (including a
+ *       cross-claim or counterclaim in a lawsuit) alleging that the Work
+ *       or a Contribution incorporated within the Work constitutes direct
+ *       or contributory patent infringement, then any patent licenses
+ *       granted to You under this License for that Work shall terminate
+ *       as of the date such litigation is filed.
+ *
+ *    4. Redistribution. You may reproduce and distribute copies of the
+ *       Work or Derivative Works thereof in any medium, with or without
+ *       modifications, and in Source or Object form, provided that You
+ *       meet the following conditions:
+ *
+ *       (a) You must give any other recipients of the Work or
+ *           Derivative Works a copy of this License; and
+ *
+ *       (b) You must cause any modified files to carry prominent notices
+ *           stating that You changed the files; and
+ *
+ *       (c) You must retain, in the Source form of any Derivative Works
+ *           that You distribute, all copyright, patent, trademark, and
+ *           attribution notices from the Source form of the Work,
+ *           excluding those notices that do not pertain to any part of
+ *           the Derivative Works; and
+ *
+ *       (d) If the Work includes a "NOTICE" text file as part of its
+ *           distribution, then any Derivative Works that You distribute must
+ *           include a readable copy of the attribution notices contained
+ *           within such NOTICE file, excluding those notices that do not
+ *           pertain to any part of the Derivative Works, in at least one
+ *           of the following places: within a NOTICE text file distributed
+ *           as part of the Derivative Works; within the Source form or
+ *           documentation, if provided along with the Derivative Works; or,
+ *           within a display generated by the Derivative Works, if and
+ *           wherever such third-party notices normally appear. The contents
+ *           of the NOTICE file are for informational purposes only and
+ *           do not modify the License. You may add Your own attribution
+ *           notices within Derivative Works that You distribute, alongside
+ *           or as an addendum to the NOTICE text from the Work, provided
+ *           that such additional attribution notices cannot be construed
+ *           as modifying the License.
+ *
+ *       You may add Your own copyright statement to Your modifications and
+ *       may provide additional or different license terms and conditions
+ *       for use, reproduction, or distribution of Your modifications, or
+ *       for any such Derivative Works as a whole, provided Your use,
+ *       reproduction, and distribution of the Work otherwise complies with
+ *       the conditions stated in this License.
+ *
+ *    5. Submission of Contributions. Unless You explicitly state otherwise,
+ *       any Contribution intentionally submitted for inclusion in the Work
+ *       by You to the Licensor shall be under the terms and conditions of
+ *       this License, without any additional terms or conditions.
+ *       Notwithstanding the above, nothing herein shall supersede or modify
+ *       the terms of any separate license agreement you may have executed
+ *       with Licensor regarding such Contributions.
+ *
+ *    6. Trademarks. This License does not grant permission to use the trade
+ *       names, trademarks, service marks, or product names of the Licensor,
+ *       except as required for reasonable and customary use in describing the
+ *       origin of the Work and reproducing the content of the NOTICE file.
+ *
+ *    7. Disclaimer of Warranty. Unless required by applicable law or
+ *       agreed to in writing, Licensor provides the Work (and each
+ *       Contributor provides its Contributions) on an "AS IS" BASIS,
+ *       WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ *       implied, including, without limitation, any warranties or conditions
+ *       of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ *       PARTICULAR PURPOSE. You are solely responsible for determining the
+ *       appropriateness of using or redistributing the Work and assume any
+ *       risks associated with Your exercise of permissions under this License.
+ *
+ *    8. Limitation of Liability. In no event and under no legal theory,
+ *       whether in tort (including negligence), contract, or otherwise,
+ *       unless required by applicable law (such as deliberate and grossly
+ *       negligent acts) or agreed to in writing, shall any Contributor be
+ *       liable to You for damages, including any direct, indirect, special,
+ *       incidental, or consequential damages of any character arising as a
+ *       result of this License or out of the use or inability to use the
+ *       Work (including but not limited to damages for loss of goodwill,
+ *       work stoppage, computer failure or malfunction, or any and all
+ *       other commercial damages or losses), even if such Contributor
+ *       has been advised of the possibility of such damages.
+ *
+ *    9. Accepting Warranty or Additional Liability. While redistributing
+ *       the Work or Derivative Works thereof, You may choose to offer,
+ *       and charge a fee for, acceptance of support, warranty, indemnity,
+ *       or other liability obligations and/or rights consistent with this
+ *       License. However, in accepting such obligations, You may act only
+ *       on Your own behalf and on Your sole responsibility, not on behalf
+ *       of any other Contributor, and only if You agree to indemnify,
+ *       defend, and hold each Contributor harmless for any liability
+ *       incurred by, or claims asserted against, such Contributor by reason
+ *       of your accepting any such warranty or additional liability.
+ *
+ *    END OF TERMS AND CONDITIONS
+ *
+ *    APPENDIX: How to apply the Apache License to your work.
+ *
+ *       To apply the Apache License to your work, attach the following
+ *       boilerplate notice, with the fields enclosed by brackets "[]"
+ *       replaced with your own identifying information. (Don't include
+ *       the brackets!)  The text should be enclosed in the appropriate
+ *       comment syntax for the file format. We also recommend that a
+ *       file or class name and description of purpose be included on the
+ *       same "printed page" as the copyright notice for easier
+ *       identification within third-party archives.
+ *
+ *    Copyright 2023 viadee IT-Unternehmensberatung AG
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
 package de.viadee.apiunit.demo;
 
 import org.springframework.web.bind.annotation.*;