docs: def copy(self, src, dst, other_system=None):
          """
          Copy object of the same storage.
  
          Args:
              src (str): Path or URL.
              dst (str): Path or URL.
              other_system (pycosio._core.io_system.SystemBase subclass): Unused.
          """
          copy_source = self.get_client_kwargs(src)
          copy_destination = self.get_client_kwargs(dst)
          with _handle_oss_error():
              bucket = self._get_bucket(copy_destination)
              bucket.copy_object(
                  source_bucket_name=copy_source['bucket_name'],
                  source_key=copy_source['key'],
                  target_key=copy_destination['key'])