highlightNext method
void
highlightNext()
Implementation
void highlightNext() {
final items = value.filteredItems;
if (items.isEmpty) return;
final current = value.highlightedIndex;
final next = (current == null) ? 0 : (current + 1) % items.length;
value = value.copyWith(highlightedIndex: next);
_overlay?.markNeedsBuild();
}