code: func (chordAsyncResult *ChordAsyncResult) Get(sleepDuration time.Duration) ([]reflect.Value, error) {
  	if chordAsyncResult.backend == nil {
  		return nil, ErrBackendNotConfigured
  	}
  
  	var err error
  	for _, asyncResult := range chordAsyncResult.groupAsyncResults {
  		_, err = asyncResult.Get(sleepDuration)
  		if err != nil {
  			return nil, err
  		}
  	}
  
  	return chordAsyncResult.chordAsyncResult.Get(sleepDuration)
  }
docs: // Get returns result of a chord (synchronous blocking call)