Added default option to avoid generating ICppMarshal interface in the output files.

src/Generator/Generators/CSharp/CSharpTextTemplate.cs

@@ -366,7 +366,11 @@ namespace CppSharp.Generators.CSharp
                     PopBlock(NewLineKind.BeforeNextBlock);
                 }
 
-                GenerateClassMarshals(@class);
+                if (Options.GenerateClassMarshals)
+                {
+                    GenerateClassMarshals(@class);
+                }
+
                 GenerateClassConstructors(@class);
 
                 if (@class.IsUnion)
@@ -772,7 +776,10 @@ namespace CppSharp.Generators.CSharp
             if (@class.IsRefType)
                 bases.Add("IDisposable");
 
-            bases.Add("CppSharp.Runtime.ICppMarshal");
+            if (Options.GenerateClassMarshals)
+            {
+                bases.Add("CppSharp.Runtime.ICppMarshal");
+            }
 
             if (bases.Count > 0)
                 Write(" : {0}", string.Join(", ", bases));

src/Generator/Options.cs

@@ -37,6 +37,7 @@ namespace CppSharp
             GeneratorKind = GeneratorKind.CSharp;
             GenerateLibraryNamespace = true;
             GeneratePartialClasses = true;
+            GenerateClassMarshals = false;
             OutputInteropIncludes = true;
             MaxIndent = 80;
             CommentPrefix = "///";
@@ -89,6 +90,7 @@ namespace CppSharp
         public bool GenerateInterfacesForMultipleInheritance;
         public bool GenerateProperties;
         public bool GenerateInternalImports;
+        public bool GenerateClassMarshals;
 
         /// <summary>
         /// Enable this option to enable generation of finalizers.