code: func recentIntent(intents map[string]nodeIntent, node string, itype messageType) (LamportTime, bool) {
  	if intent, ok := intents[node]; ok && intent.Type == itype {
  		return intent.LTime, true
  	}
  
  	return LamportTime(0), false
  }
docs: // recentIntent checks the recent intent buffer for a matching entry for a given
  // node, and returns the Lamport time, if an intent is present, indicated by the
  // returned boolean. Make sure the memberLock is held for read when passing in
  // the Serf instance's recentIntents member.