human
Solve the following python programming problem given the following code:
def __call__(self, func) : 
    def controller_replacement(environ, start_response, **args) : 
        req = Request (environ) 
        access_response = self.__handle_access (req, environ, start_response) 
        if access_response : 
            return access_response 
result = self.__execute_request (func, args, req, environ) 
        resp = self.__build_response (result) 
        return resp (environ, start_response) 
controller_replacement.func = func 
    controller_replacement.response_type = self.response_type 
    controller_replacement.body = self.body 
    controller_replacement.__name__ = func.__name__ 
    controller_replacement.__controller__ = True 
    controller_replacement.__method__ = self.method 
    controller_replacement.__path__ = (self.path or ('/%s' % func.__name__)) 
    return func 

    
    

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

return controller_replacement