@Override
 public void setMyScope(final Scope scope) {
   super.setMyScope(scope);
   if (instance != null) {
     instance.setMyScope(scope);
   }
 }
 @Override
 public void setMyScope(final Scope scope) {
   super.setMyScope(scope);
   if (source_type != null) {
     source_type.setMyScope(scope);
   }
   mappingTargets.setMyScope(scope);
 }