public function actionTest()
{
$countries = new Nstable(['name' => 'Countries']);
$countries->makeRoot();
$russia = new Nstable(['name' => 'Russia']);
$russia->prependTo($countries);
$australia = new Nstable(['name' => 'Australia']);
$australia->appendTo($countries);
$newZeeland = new Nstable(['name' => 'New Zeeland']);
$newZeeland->insertBefore($australia);
$unitedStates = new Nstable(['name' => 'United States']);
$unitedStates->insertAfter($australia);
}
