human
Solve the following python programming problem given the following code:
def __coerce_to_generator_func(self, func) : 
    'Ensures that given function is a generator function,
        i.e. a function that returns a generator.
        This way all properties can be checked in the same manner,
        regardless of whether they use `yield` internally or not.
        ' 
    if inspect.isgeneratorfunction (func) : 
        return func 
@ functools.wraps (func) 
    def generator_func(* args, **kwargs) : 
        func (* args, ** kwargs) 
        (yield) 
return func 

    
    

    Fix the buggy line: return func
assistant
#Here is Python program to fix the buggy line: return func
.

return def generator_func(