serialize method
Implementation
@override
Uint8List serialize() {
var buffer = Uint8List(size);
var currentPos = 0;
buffer.setRange(currentPos, currentPos + round.size, round.serialize());
currentPos += round.size;
buffer.setRange(currentPos, currentPos + height.size, height.serialize());
currentPos += height.size;
buffer.setRange(currentPos, currentPos + hash.size, hash.serialize());
currentPos += hash.size;
return buffer;
}