encode static method

Implementation

static String encode(List<int>? list) {
  if (list == null) {
    return '';
  }
  final result = StringBuffer();
  for (var i = 0; i < list.length; i++) {
    final part = list[i];
    result.write('${part < 16 ? '0' : ''}${part.toRadixString(16)}');
  }
  return result.toString();
}