#1 xslt() doesnt throw any checked exceptions

src/main/java/com/jcabi/xml/XML.java

@@ -33,7 +33,6 @@
 import javax.validation.constraints.NotNull;
 import javax.xml.namespace.NamespaceContext;
 import javax.xml.transform.Source;
-import javax.xml.transform.TransformerException;
 import org.w3c.dom.Node;
 
 /**
@@ -147,10 +146,13 @@ public interface XML {
 
     /**
      * Transform to another XML using provided XSL.
+     *
+     * <p>A runtime exception will be thrown if transformation fails for any
+     * reason.
+     *
      * @param xsl XSL stylesheet
      * @return XML document
-     * @throws TransformerException If fails to transform
      */
-    XML xslt(Source xsl) throws TransformerException;
+    XML xslt(Source xsl);
 
 }

src/main/java/com/jcabi/xml/XMLDocument.java

@@ -243,15 +243,24 @@ public Node node() {
 
     @Override
     @NotNull
-    public XML xslt(final Source xsl) throws TransformerException {
-        final Transformer trans = XMLDocument.TFACTORY.newTransformer(xsl);
+    public XML xslt(final Source xsl) {
+        final Transformer trans;
+        try {
+            trans = XMLDocument.TFACTORY.newTransformer(xsl);
+        } catch (TransformerConfigurationException ex) {
+            throw new IllegalStateException(ex);
+        }
         final Document target;
         try {
             target = XMLDocument.DFACTORY.newDocumentBuilder().newDocument();
         } catch (ParserConfigurationException ex) {
             throw new IllegalStateException(ex);
         }
-        trans.transform(new DOMSource(this.dom), new DOMResult(target));
+        try {
+            trans.transform(new DOMSource(this.dom), new DOMResult(target));
+        } catch (TransformerException ex) {
+            throw new IllegalStateException(ex);
+        }
         return new XMLDocument(target, this.context);
     }