code: func (s *Snapshotter) processQuery(q *Query) {
  	// Ignore old clocks
  	if q.LTime <= s.lastQueryClock {
  		return
  	}
  	s.lastQueryClock = q.LTime
  	s.tryAppend(fmt.Sprintf("query-clock: %d\n", q.LTime))
  }
docs: // processQuery is used to handle a single query event