<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def HandleVerack(self):
 """Handle the `verack` response."""

        m = Message('verack')
        self.SendSerializedMessage(m)
        self.leader.NodeCount += 1
        self.identifier = self.leader.NodeCount
        logger.debug(f"{self.prefix} Handshake complete!")
        self.handshake_complete = True
        self.ProtocolReady()