code: func (l *Logs) consume(name string, ch chan *Event, done chan error) {
  	log := Log{
  		Config:    l.Config,
  		GroupName: name,
  		Log:       log.WithField("group", name),
  	}
  
  	for event := range log.Start() {
  		ch <- event
  	}
  
  	done <- log.Err()
  }
docs: // consume logs for group `name`.