public function canSelectIndex(int $index) : bool
    {
        return isset($this->items[$index]) && $this->items[$index]->canSelect();
    }
public function canSelectIndex(int $index) : bool
    {
        return isset($this->items[$index]) && $this->items[$index]->canSelect();
    }
public function canSelectIndex ( int $ index ) : bool { return isset ( $ this -> items [ $ index ] ) && $ this -> items [ $ index ] -> canSelect ( ) ; }
Is there an item with this index and can it be
selected?
Is there an item with this index and can it be selected?