Add UseSystemTextJson to EnumTemplateModel, closes #1860

Author: RicoSuter

src/NJsonSchema.CodeGeneration.CSharp/Models/EnumTemplateModel.cs

@@ -51,8 +51,11 @@ public EnumTemplateModel(string typeName, JsonSchema schema, CSharpGeneratorSett
 
         /// <summary>Gets or sets if we output as Bit Flags.</summary>
         public bool IsEnumAsBitFlags => _settings.EnforceFlagEnums || _schema.IsFlagEnumerable;
+        
+        /// <summary>Gets a value indicating whether to use System.Text.Json</summary>
+        public bool UseSystemTextJson => _settings.JsonLibrary == CSharpJsonLibrary.SystemTextJson;
 
-        /// <summary>Gets a value indicating whether the enum needs an other base type to representing an extended value range.</summary>
+        /// <summary>Gets a value indicating whether the enum needs another base type to representing an extended value range.</summary>
         public bool HasExtendedValueRange => _schema.Format == JsonFormatStrings.Long;
 
         /// <summary>Gets the enum values.</summary>