appendArray method
Implementation
Uint8List appendArray(Uint8List array) {
// if (_bytes == null) {
// _bytes = Uint8List.fromList(array);
// } else {
// _bytes = _combine(_bytes, array);
// }
// return _bytes;
// return _combine(_bytes, array);
_bytes = ByteUtil.combine(_bytes, array);
return _bytes;
}