code: func MustHashTrytes(t Trytes, rounds ...CurlRounds) Trytes {
  	trytes, err := HashTrytes(t, rounds...)
  	if err != nil {
  		panic(err)
  	}
  	return trytes
  }
docs: // MustHashTrytes returns the hash of the given trytes.
  // It panics if the given trytes are not valid.