toFields method
The ISO fields a card-present message carries. Field 22 is the entry mode
plus one digit: 1 when a PIN was entered, 2 when it was not.
Implementation
Map<int, Object?> toFields({Uint8List? pinBlock}) => <int, Object?>{
22: "${entryMode.value}${pinBlock == null ? "2" : "1"}",
35: track2,
23: ?panSequenceNumber,
if (iccData != null) 55: IsoUtil.hexString(iccData!),
52: ?pinBlock,
};