Close a room.

        The only difference with the :func:`socketio.Server.close_room` method
        is that when the ``namespace`` argument is not given the namespace
        associated with the class is used.

        Note: this method is a coroutine.

async def close_room(self, room, namespace=None):
        """Close a room.

        The only difference with the :func:`socketio.Server.close_room` method
        is that when the ``namespace`` argument is not given the namespace
        associated with the class is used.

        Note: this method is a coroutine.
        """
        return await self.server.close_room(
            room, namespace=namespace or self.namespace)