human
Solve the following python programming problem given the following code:
@ patch.object (Collector, 'flush') 
def test_should_create_type(self, publish_mock) : 
    def se(url) : 
        return self.getFixture ('kafka_server.json') 
patch_urlopen = patch ('urllib2.urlopen', Mock (side_effect = se)) 
    with patch_urlopen : 
        self.collector.collect () 
        self.assertEquals (len (self.collector.payload), 24) 
metrics = find_metric (self.collector.payload, 'kafka.server.BrokerTopicMetrics.MessagesInPerSec.count') 
    self.assertNotEqual (len (se), 0) 
    metric = find_by_dimension (metrics, 'topic', 'foobar') 
    self.assertEquals (metric ['type'], 'CUMCOUNTER') 
    metrics_dots = find_metric (self.collector.payload, 'kafka.server.KafkaServer4.2.BrokerState.value') 
    self.assertNotEqual (len (metrics_dots), 0) 

    
    

    Fix the buggy line: self.assertNotEqual (len (se), 0)
assistant
#Here is Python code to fix the buggy line: self.

self.assertNotEqual (len (metrics), 0)