docs: def _model_to_dict(model, ignore):
          """
          Convert OSS model to dict.
  
          Args:
              model (oss2.models.RequestResult): Model.
              ignore (tuple of str): Keys to not insert to dict.
  
          Returns:
              dict: Model dict version.
          """
          return {attr: value for attr, value in model.__dict__.items()
                  if not attr.startswith('_') and attr not in ignore}