headerPositionM property

Implementation

NPPIHeaderPosition? get headerPositionM {
  final List<NPPIHeaderPosition> headerPositions = List.from(this)
    ..removeWhere((e) => e.loadCarrierIndicator?.toLowerCase() == 'x')
    ..removeWhere((e) => e.detailItemType?.toLowerCase() == 'p');

  return headerPositions.isNotEmpty ? headerPositions.first : null;
}