<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def update_bgp_speaker(self, bgp_speaker_id, body=None):
 """Update a BGP speaker."""

        return self.put(self.bgp_speaker_path % bgp_speaker_id, body=body)