read method

Implementation

@override
InventoryItem read(BinaryReader reader) {
  final numOfFields = reader.readByte();
  final fields = <int, dynamic>{
    for (int i = 0; i < numOfFields; i++) reader.readByte(): reader.read(),
  };
  return InventoryItem(
    name: fields[0] as String,
    category: fields[1] as String,
    quantity: fields[2] as int,
  );
}