onOverScrolled property Null safety
Event fired to respond to the results of an over-scroll operation.
x represents the new X scroll value in pixels.
y represents the new Y scroll value in pixels.
x was clamped to an over-scroll boundary.
y was clamped to an over-scroll boundary.
final void Function(InAppWebViewController controller, int x, int y, bool clampedX, bool clampedY)? onOverScrolled;