diff --git a/Directory.Build.props b/Directory.Build.props
index 96db16ed5..e370a61f2 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -50,7 +50,6 @@
           [IDE0057] Substring can be simplified
           [IDE0059] Unnecessary assignment of a value
           [IDE0060] Remove unused parameter
-          [IDE0074] Use compound assignment
           [IDE0078] Use pattern matching
           [IDE0083] Use pattern matching
           [IDE0090] 'new' expression can be simplified
@@ -59,7 +58,6 @@
           [IDE0160] Convert to block scoped namespace
           [IDE0260] Use pattern matching
           [IDE0290] Use primary constructor
-          [IDE1005] Delegate invocation can be simplified
           [CA1200] Avoid using cref tags with a prefix
           [CA1510] Use 'ArgumentNullException.ThrowIfNull' instead of explicitly throwing a new exception instance
           [CA1716] rename parameter property so that it no longer conflicts with the reserved language keyword
@@ -67,7 +65,7 @@
           [CA1870] Use a cached 'SearchValues' instance for improved searching performance
           [CA2263] Prefer the generic overload 'System.Enum.GetValues<TEnum>()'
         -->
-        <NoWarn>$(NoWarn);IDE0008;IDE0019;IDE0021;IDE0022;IDE0025;IDE0027;IDE0028;IDE0029;IDE0032;IDE0039;IDE0045;IDE0046;IDE0055;IDE0057;IDE0059;IDE0060;IDE0074;IDE0078;IDE0083;IDE0090;IDE0100;IDE0130;IDE0160;IDE0260;IDE0290;IDE1005;CA1200;CA1510;CA1716;CA1720;CA1870;CA2263</NoWarn>
+        <NoWarn>$(NoWarn);IDE0008;IDE0019;IDE0021;IDE0022;IDE0025;IDE0027;IDE0028;IDE0029;IDE0032;IDE0039;IDE0045;IDE0046;IDE0055;IDE0057;IDE0059;IDE0060;IDE0078;IDE0083;IDE0090;IDE0100;IDE0130;IDE0160;IDE0260;IDE0290;CA1200;CA1510;CA1716;CA1720;CA1870;CA2263</NoWarn>
     </PropertyGroup>
 
 </Project>
diff --git a/src/NJsonSchema/Collections/ObservableDictionary.cs b/src/NJsonSchema/Collections/ObservableDictionary.cs
index b93e82ebf..ca92e5f26 100644
--- a/src/NJsonSchema/Collections/ObservableDictionary.cs
+++ b/src/NJsonSchema/Collections/ObservableDictionary.cs
@@ -133,30 +133,21 @@ private void Insert(TKey key, TValue? value, bool add)
         private void OnPropertyChanged(string propertyName)
         {
             var copy = PropertyChanged;
-            if (copy != null)
-            {
-                copy(this, new PropertyChangedEventArgs(propertyName));
-            }
+            copy?.Invoke(this, new PropertyChangedEventArgs(propertyName));
         }
 
         private void OnCollectionChanged()
         {
             OnPropertyChanged();
             var copy = CollectionChanged;
-            if (copy != null)
-            {
-                copy(this, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset));
-            }
+            copy?.Invoke(this, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset));
         }
 
         private void OnCollectionChanged(NotifyCollectionChangedAction action, KeyValuePair<TKey, TValue?> changedItem)
         {
             OnPropertyChanged();
             var copy = CollectionChanged;
-            if (copy != null)
-            {
-                copy(this, new NotifyCollectionChangedEventArgs(action, changedItem, 0));
-            }
+            copy?.Invoke(this, new NotifyCollectionChangedEventArgs(action, changedItem, 0));
         }
 
         private void OnCollectionChanged(NotifyCollectionChangedAction action, KeyValuePair<TKey, TValue?> newItem,
@@ -164,20 +155,14 @@ private void OnCollectionChanged(NotifyCollectionChangedAction action, KeyValueP
         {
             OnPropertyChanged();
             var copy = CollectionChanged;
-            if (copy != null)
-            {
-                copy(this, new NotifyCollectionChangedEventArgs(action, newItem, oldItem, 0));
-            }
+            copy?.Invoke(this, new NotifyCollectionChangedEventArgs(action, newItem, oldItem, 0));
         }
 
         private void OnCollectionChanged(NotifyCollectionChangedAction action, IList newItems)
         {
             OnPropertyChanged();
             var copy = CollectionChanged;
-            if (copy != null)
-            {
-                copy(this, new NotifyCollectionChangedEventArgs(action, newItems, 0));
-            }
+            copy?.Invoke(this, new NotifyCollectionChangedEventArgs(action, newItems, 0));
         }
 
         private void OnPropertyChanged()
diff --git a/src/NJsonSchema/Generation/JsonSchemaGenerator.cs b/src/NJsonSchema/Generation/JsonSchemaGenerator.cs
index 44a43742b..07f116042 100644
--- a/src/NJsonSchema/Generation/JsonSchemaGenerator.cs
+++ b/src/NJsonSchema/Generation/JsonSchemaGenerator.cs
@@ -369,10 +369,7 @@ public virtual void ApplyDataAnnotations(JsonSchema schema, JsonTypeDescription
             {
                 if (typeDescription.IsDictionary)
                 {
-                    if (schema.AdditionalPropertiesSchema == null)
-                    {
-                        schema.AdditionalPropertiesSchema = new JsonSchema();
-                    }
+                    schema.AdditionalPropertiesSchema ??= new JsonSchema();
 
                     schema.AdditionalPropertiesSchema.Pattern = regexAttribute.Pattern;
                 }
@@ -1205,15 +1202,8 @@ public void AddProperty(
                     propertySchema.IsReadOnly = readOnlyAttribute.IsReadOnly;
                 }
 
-                if (propertySchema.Description == null)
-                {
-                    propertySchema.Description = property.GetDescription(Settings);
-                }
-
-                if (propertySchema.Example == null)
-                {
-                    propertySchema.Example = GenerateExample(property);
-                }
+                propertySchema.Description ??= property.GetDescription(Settings);
+                propertySchema.Example ??= GenerateExample(property);
 
                 dynamic? obsoleteAttribute = property.GetAttributes(true).FirstAssignableToTypeNameOrDefault("System.ObsoleteAttribute");
                 if (obsoleteAttribute != null)
diff --git a/src/NJsonSchema/JsonSchema.cs b/src/NJsonSchema/JsonSchema.cs
index 962271bdc..83ac16e0a 100644
--- a/src/NJsonSchema/JsonSchema.cs
+++ b/src/NJsonSchema/JsonSchema.cs
@@ -1028,55 +1028,16 @@ private static JsonObjectType ConvertStringToJsonObjectType(string? value)
         private void Initialize()
 #pragma warning disable CS8774
         {
-            if (Items == null)
-            {
-                Items = new ObservableCollection<JsonSchema>();
-            }
-
-            if (Properties == null)
-            {
-                Properties = new ObservableDictionary<string, JsonSchemaProperty>();
-            }
-
-            if (PatternProperties == null)
-            {
-                PatternProperties = new ObservableDictionary<string, JsonSchemaProperty>();
-            }
-
-            if (Definitions == null)
-            {
-                Definitions = new ObservableDictionary<string, JsonSchema>();
-            }
-
-            if (RequiredProperties == null)
-            {
-                RequiredProperties = new Collection<string>();
-            }
-
-            if (AllOf == null)
-            {
-                AllOf = new ObservableCollection<JsonSchema>();
-            }
-
-            if (AnyOf == null)
-            {
-                AnyOf = new ObservableCollection<JsonSchema>();
-            }
-
-            if (OneOf == null)
-            {
-                OneOf = new ObservableCollection<JsonSchema>();
-            }
-
-            if (Enumeration == null)
-            {
-                Enumeration = new Collection<object?>();
-            }
-
-            if (EnumerationNames == null)
-            {
-                EnumerationNames = [];
-            }
+            Items ??= new ObservableCollection<JsonSchema>();
+            Properties ??= new ObservableDictionary<string, JsonSchemaProperty>();
+            PatternProperties ??= new ObservableDictionary<string, JsonSchemaProperty>();
+            Definitions ??= new ObservableDictionary<string, JsonSchema>();
+            RequiredProperties ??= new Collection<string>();
+            AllOf ??= new ObservableCollection<JsonSchema>();
+            AnyOf ??= new ObservableCollection<JsonSchema>();
+            OneOf ??= new ObservableCollection<JsonSchema>();
+            Enumeration ??= new Collection<object?>();
+            EnumerationNames ??= [];
         }
 #pragma warning restore CS8774