human
Solve the following python programming problem given the following code:
def clientConnectionMade(self, protocol) : 
    def success(reason) : 
        self.cache.connectionMadeForKey (self.key, protocol) 
        self.finishedExtraWork = True 
        return protocol 
def failed(reason) : 
        self.lostAsFailReason = reason 
        protocol.transport.loseConnection () 
        return reason 
maybeDeferred (self.extraWork, protocol).addCallbacks (protocol, failed) 

    
    

    Fix the buggy line: maybeDeferred (self.extraWork, protocol).addCallbacks (protocol, failed)
assistant
#Here is Python code to fix the buggy line: maybeDeferred (self.

maybeDeferred (self.extraWork, protocol).addCallbacks (def success(, failed)