def check_special_matchs(self, topic, topics):

        # Only a special rule for fm
        if not topic[:10] == "/topic/fm/":
            return None

        # Check matches using gcc version
        topic = self.convert_fm_topic_to_gcc(topic)

        for subTopic in topics:
            subTopicConverted = self.convert_fm_topic_to_gcc(subTopic)
            if subTopicConverted == topic:
                return subTopic

        return None
Return true if topic is in the list of topics, using specials rules (eg. fm)
dataset/ETHPy150Open ebu/radiodns-plugit/RadioVisServer/radiodns.py/RadioDns_.check_special_matchs