def _topic_arn_lookup(self):
    all_topics = self._list_topics()
    lookup_topic = (':%s' % self.name)
    for topic in all_topics:
        if topic.endswith(lookup_topic):
            return topic
def _topic_arn_lookup(self):
    all_topics = self._list_topics()
    lookup_topic = (':%s' % self.name)
    for topic in all_topics:
        if topic.endswith(lookup_topic):
            return topic