longPressAt method Null safety

Future<void> longPressAt(
  1. Offset location,
  2. {int? pointer,
  3. int buttons = kPrimaryButton}

Dispatch a pointer down / pointer up sequence at the given location with a delay of kLongPressTimeout + kPressTimeout between the two events.


Future<void> longPressAt(Offset location, {int? pointer, int buttons = kPrimaryButton}) {
  return TestAsyncUtils.guard<void>(() async {
    final TestGesture gesture = await startGesture(location, pointer: pointer, buttons: buttons);
    await pump(kLongPressTimeout + kPressTimeout);
    await gesture.up();