serialize method Null safety

Uint8List serialize()

Serializes the destination as a byte array to be used in the blockchain.

Implementation

Uint8List serialize() {
  return (BytesBuilder()
        ..add(CompactSize.encode(
            Uint8List.fromList(jsonEncode(paths).codeUnits)))
        ..add(CompactSize.encode(
            Uint8List.fromList(jsonEncode(uses).codeUnits))))
      .toBytes();
}