createOverlayEntries method
- @override
Subclasses should override this getter to return the builders for the overlay.
Implementation
@override
Iterable<OverlayEntry> createOverlayEntries() sync* {
yield _modalBarrier = new OverlayEntry(builder: _buildModalBarrier);
yield new OverlayEntry(builder: _buildModalScope, maintainState: maintainState);
}