raft.go
func (r *Raft) setLastContact() {
	r.lastContactLock.Lock()
	r.lastContact = time.Now()
	r.lastContactLock.Unlock()
}
func (r *Raft) setLastContact() {
	r.lastContactLock.Lock()
	r.lastContact = time.Now()
	r.lastContactLock.Unlock()
}
func ( r * Raft ) setLastContact ( ) { r . lastContactLock . Lock ( ) r . lastContact = time . Now ( ) r . lastContactLock . Unlock ( ) }
// setLastContact is used to set the last contact time to now
setLastContact is used to set the last contact time to now