CustomData tags get lost when ITD supplied fields or methods get pushed in to the corresponding java sources

public final boolean addMethod(MethodMetadataBuilder method) {
   if (method == null || !getDeclaredByMetadataId().equals(method.getDeclaredByMetadataId())) {
      // the method may have custom data tags which are lost here 
      return false;
   }
   onAddMethod(method);
   return declaredMethods.add(method);
}