human
Solve the following python programming problem given the following code:
def __call__(self, environ, start_response) : 
    start_time = time.time () 
    def logging_start_response(status, response_headers, * args) : 
        out = start_response (status, response_headers, * args) 
        server_time = (time.time () - start_time) 
        self._log (status, server_time, environ) 
        return out 
return self._app (environ, environ) 

    
    

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

return self._app (environ, def logging_start_response()