sendForward method
void
sendForward()
Implementation
void sendForward() {
final selection = _selected.toList();
if (selection.length == 1) {
final key = selection.first;
final index = nodes.indexWhere((e) => e.key == key);
if (index == -1) return;
if (index == nodes.length - 1) return;
final current = nodes[index];
nodes.removeAt(index);
nodes.insert(index + 1, current);
notifyListeners();
}
}