huDetailsTotalQuantity method

Implementation

double huDetailsTotalQuantity() {
  if (this == null) return 0;

  HuItem? huItem = this!.toHuItem?.firstWhereOrNull(
    (i) => i.batch?.isNotEmpty ?? false,
  );

  return huItem != null
      ? double.tryParse(huItem.packQuantity ?? '0') ?? 0
      : 0;
}