getUnitItemCode method
Implementation
String? getUnitItemCode(GS1Barcode gs1barcode) {
final String barcode = gs1barcode.elements.entries.fold(
'',
(prevValue, entry) => prevValue += entry.value.rawData,
);
if (gs1barcode.AIs.isNotEmpty &&
gs1barcode.AIs.every(_validItemAiList.contains) &&
barcode.isNotEmpty) {
return barcode;
} else {
return null;
}
}