anchor.diff:    MZString = public class(MZObject)
     private
       method get_length: Integer;
  +    method get_NSString: NSString;
       class var fLength: method(aInstance: ^MonoObject; aEx: ^^MonoException): Integer;
       class var fType: MZType := MZMonoRuntime.sharedInstance.getCoreType('System.String');
     public
  
positive.code:   exit lTmp;
  end;
  
  end.
  
negative.code:     class method NSStringWithMonoString(s: ^MonoString): NSString;
  
      property length: Integer read get_length;
      property NSString: NSString read get_NSString;
    end;
  
    MZArray = public class(MZObject)
  