human
Solve the following python programming problem given the following code:
def test_cleanup_empty_bridge(self) : 
    def callback(br_fixture) : 
        return config_fixtures.ConfigDict () 
self._test_linuxbridge_cleanup (False, self) 

    
    

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

self._test_linuxbridge_cleanup (False, def callback()