Merge pull request #436 from xamarin/redo-ISwiftObject-implementations

No longer implementing all of ISwiftObject

Author: stephen-hawley

SwiftReflector/MarshalEngine.cs

@@ -113,7 +113,8 @@ public IEnumerable<ICodeElement> MarshalConstructor (TypeDeclaration classDecl,
 				} else {
 					if (isHomonym) {
 						use.AddIfNotPresent (typeof (SwiftObjectRegistry));
-						postMarshalCode.Add (CSReturn.ReturnLine (new CSFunctionCall (cl.Name.Name, true, thisIntPtr, new CSIdentifier ("SwiftObjectRegistry.Registry"))));
+						postMarshalCode.Add (CSReturn.ReturnLine (new CSFunctionCall (cl.Name.Name, true, thisIntPtr,
+							new CSFunctionCall ($"{cl.Name.Name}.GetSwiftMetatype", false), new CSIdentifier ("SwiftObjectRegistry.Registry"))));
 					} else {
 						postMarshalCode.Add (CSReturn.ReturnLine (thisIntPtr));
 					}