code: def HandleVerack(self):
          
          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()
docs: Handle the `verack` response.