code: def join(self, network):
          
          args = {'network': network}
          self._network_chk.check(args)
          response = self._client.raw('zerotier.join', args)
          result = response.get()
  
          if result.state != 'SUCCESS':
              raise RuntimeError('failed to join zerotier network: %s', result.stderr)
docs: Join a zerotier network
  
          :param network: network id to join
          :return: