hasImplicitScrolling constant Null safety
Whether the platform can scroll the semantics node when the user attempts to move focus to an offscreen child.
For example, a ListView widget has implicit scrolling so that users can easily move the accessibility focus to the next set of children. A PageView widget does not have implicit scrolling, so that users don't navigate to the next page when reaching the end of the current one.
static const SemanticsFlag hasImplicitScrolling = SemanticsFlag._(_kHasImplicitScrollingIndex);