func Concat(arrays ...[]byte) []byte {
	var result []byte = arrays[0]

	for _, arr := range arrays[1:] {
		result = append(result, arr...)
	}

	return result
}
func Concat(arrays ...[]byte) []byte {
	var result []byte = arrays[0]

	for _, arr := range arrays[1:] {
		result = append(result, arr...)
	}

	return result
}
// Concat combine several arrays into single one, resulting slice = A1 | A2 | A3 | ... | An