human
Solve the following python programming problem given the following code:
def add_impersonator_counts(cls) : 
    cls.impersonators = Counter () 
    cls.chaperones = Counter () 
    old_init = counting_init.__init__ 
    def counting_init(self, * args) : 
        old_init (self, * args) 
        if self.is_impersonator () : 
            cls.impersonators.inc () 
else : 
            if self.is_chaperone () : 
                cls.chaperones.inc () 
else : 
                assert False 
counting_init.__name__ = old_init.__name__ 
    cls.__init__ = counting_init 
    return cls 

    
    

    Fix the buggy line: old_init = counting_init.__init__
assistant
#Here is Python program to fix the buggy line: old_init = counting_init.

old_init = cls.__init__