human
Solve the following python programming problem given the following code:
def only_transport(* names) : 
    def decorator(func) : 
        def caller(* args, **kwargs) : 
            if (GLOBAL ['transport'] in names) : 
                return func (* args, ** kwargs) 
else : 
                func_name = ('%s:%s' % (func.__module__, func.__name__)) 
                logger.debug (('Running test %s for transport %s is restricted' % (func_name, GLOBAL ['transport']))) 
                return None 
return caller 
return names 

    
    

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

return def decorator(