<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def reset_sequence(self, topic):
 """Reset the expected sequence number for a topic If the topic is unknown, this does nothing. This behaviour is useful when you have wildcard topics that only create queues once they receive the first message matching the topic. Args: topic (string):
 The topic to reset the packet queue on """


        if topic in self.queues:
            self.queues[topic].reset()