code: func MustTransactionsToTrytes(txs Transactions) []Trytes {
  	trytes := make([]Trytes, len(txs))
  	for i := range txs {
  		trytes[i] = MustTransactionToTrytes(&txs[i])
  	}
  	return trytes
  }
docs: // MustTransactionsToTrytes returns a slice of transaction trytes from the given transactions.