code: func (k *Kerl) SqueezeTrytes(length int) (Trytes, error) {
  	trits, err := k.Squeeze(length)
  	if err != nil {
  		return "", err
  	}
  	return TritsToTrytes(trits)
  }
docs: // SqueezeTrytes squeezes out trytes of the given trit length. Length has to be a multiple of HashTrinarySize.