code: func (c *MemberlistManager) NodeMeta(limit int) []byte {
  	c.RLock()
  	meta, err := json.Marshal(c.members[c.nodeName])
  	c.RUnlock()
  	if err != nil {
  		log.Fatalf("CLU manager: %s", err.Error())
  	}
  	return meta
  }
docs: // NodeMeta is used to retrieve meta-data about the current node
  // when broadcasting an alive message. It's length is limited to
  // the given byte size. This metadata is available in the HTTPNode structure.