human
Solve the following python programming problem given the following code:
def add_disconnect_event(self, client_id) : 
    'Add an event to notify the app if a client has disconnected.

    Args:
      client_id:  A client ID used for a particular channel.
    ' 
    timeout = (self._time_func () + ChannelServiceStub.CHANNEL_TIMEOUT_SECONDS) 
    def DefineDisconnectCallback(client_id) : 
        return (lambda : self.disconnect_channel_event (client_id)) 
self.request_data.get_dispatcher ().add_event (DefineDisconnectCallback (self), timeout, 'channel-disconnect', client_id) 

    
    

    Fix the buggy line: self.request_data.get_dispatcher ().add_event (DefineDisconnectCallback (self), timeout, 'channel-disconnect', client_id)
assistant
#Here is Python code to fix the buggy line: self.

self.request_data.get_dispatcher ().add_event (DefineDisconnectCallback (client_id), timeout, 'channel-disconnect', client_id)