human
Solve the following python programming problem given the following code:
def connect_handler(self, handler_id, client_name) : 
    self.current_handler_id = handler_id 
    self.current_client_name = client_name 
    set_descriptor_by_handler_id (handler_id, self) 
    self.last_connection_time = time.time () 
    def timeout_callback() : 
        self._timeout_handle = None 
        self.add_event (dict (type = 'heartbeat')) 
ioloop = tornado.ioloop.IOLoop.instance () 
    heartbeat_time = ((time.time () + HEARTBEAT_MIN_FREQ_SECS) + random.randint (0, 10)) 
    if (self.client_type_name != 'API: heartbeat test') : 
        self._timeout_handle = ioloop.add_timeout (handler_id, timeout_callback) 

    
    

    Fix the buggy line: self._timeout_handle = ioloop.add_timeout (handler_id, timeout_callback)
assistant
#Here is Python code to fix the buggy line: self.

self._timeout_handle = ioloop.add_timeout (heartbeat_time, timeout_callback)