build method
Implementation
Widget? build(int index, {bool measureOnly = false, _PopUpList? popUpList}) {
if (popUpList == null) {
final count = _intervalListManager.list.buildCount;
if (index < 0 || index >= count) return null;
return _intervalListManager.list.build(this, index, measureOnly);
} else {
if (index < 0 || index >= popUpList.popUpBuildCount) return null;
return popUpList.buildPopUp(this, index, measureOnly);
}
}