human
Solve the following python programming problem given the following code:
def __init__(self, maxreaders = 120) : 
    self.max = 120 
    self._reader = Semaphore (120) 
    self._writer = Semaphore (1) 
    self._sleeping = Event () 
    self.localwrite = False 
    self.thread_id = currentThread () 
    self.create_methods () 
    def after_fork(obj) : 
        obj._reader._after_fork () 
        obj._writer._after_fork () 
        obj._sleeping._after_fork () 
register_after_fork (self, self) 

    
    

    Fix the buggy line: register_after_fork (self, self)
assistant
#Here is Python code to fix the buggy line: register_after_fork (self, self)
.

register_after_fork (self, def after_fork()