docs: def node_get(self, arch=None, ver=None, flavor=None, count=1,
                   retry_count=1, retry_interval=10):
          """
          Requests specified number of nodes with the provided parameters.
  
          :param arch: Server architecture (ex: x86_64)
          :param ver: CentOS version (ex: 7)
          :param count: Number of servers (ex: 2)
          :parma flavor: The flavor of machine to use (multi-arch only)
          :param retry_count: Number of times to retry in case of failure (ex: 5)
          :param retry_interval: Wait in seconds between each retry (ex: 30)
          :return: [ [ requested_hosts ], ssid ]
          """
          if self.api_key is None:
              raise exceptions.ApiKeyRequired
  
          args = "key=%s" % self.api_key
          if arch is not None:
              args += "&arch=%s" % arch
          if ver is not None:
              args += "&ver=%s" % ver
          if flavor is not None:
              args += "&flavor=%s" % flavor
          args += "&count=%s" % count
  
          resp, body = self.get('Node/get?%s' % args)
          if not body:
              for _ in range(retry_count):
                  time.sleep(retry_interval)
                  resp, body = self.get('Node/get?%s' % args)
                  if body:
                      break
  
          if not body:
              raise exceptions.NoInventory
  
          # Get the hosts that were requested.
          # Note: We have to iterate over full inventory instead of just the
          # hosts we got back from the response because the reply contains the
          # fqdn of the host while the full inventory only contains a short name.
          requested_hosts = dict()
          for host in self.full_inventory:
              for full_host in body['hosts']:
                  if host in full_host:
                      requested_hosts[host] = self.full_inventory[host]
  
          return requested_hosts, body['ssid']