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))