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.
          """
          container, obj = self.split_locator(src)
          with _handle_client_exception():
              self.client.copy_object(
                  container=container, obj=obj, destination=self.relpath(dst))