read method
*[<Null safety>](https://dart.dev/null-safety)*
ByteData read (int offset, int size)
Implementation
@override
ByteData read(int offset, int size) {
var reading = ByteData(size);
reading.buffer
.asUint8List()
.setAll(0, bytes.buffer.asUint8List(offset, size));
return reading;
}