human
Solve the following python programming problem given the following code:
@ staticmethod 
def wait_for_event(event, timeout) : 
    from twisted.internet import reactor 
    d = defer.Deferred () 
    def stop() : 
        set_check.stop () 
        if stop_call.active () : 
            stop_call.cancel () 
            d.callback (True) 
def check_if_event_set() : 
        if event.is_set () : 
            logging.debug ('Dead event has been found set') 
            stop () 
def done_waiting() : 
        logging.warning ('Event has not been found set and timeout has expired') 
        stop () 
set_check = task.LoopingCall (check_if_event_set) 
    set_check.start (0.1) 
    stop_call = reactor.callLater (stop, done_waiting) 
    return d 

    
    

    Fix the buggy line: stop_call = reactor.callLater (stop, done_waiting)
assistant
#Here is Python program to fix the buggy line: stop_call = reactor.

stop_call = reactor.callLater (timeout, done_waiting)