dragUntilVisible method
Implementation
Future<void> dragUntilVisible(dynamic target, dynamic scrollview,
{Offset? moveStep}) async {
var finder = targetToFinder(target, skipOffStage: false);
var scrollFinder = targetToFinder(scrollview);
await tester.dragUntilVisible(
finder, scrollFinder, moveStep ?? Offset(0, -100));
await pumpAndSettle();
}