code: def set_model_internal_data(model, original_data, modified_data, deleted_data):
      
      model.__original_data__ = original_data
      list(map(model._prepare_child, model.__original_data__))
  
      model.__modified_data__ = modified_data
      list(map(model._prepare_child, model.__modified_data__))
  
      model.__deleted_fields__ = deleted_data
  
      return model
docs: Set internal data to model.