Prado\Collections\TPriorityList::itemAt PHP Method

    public function itemAt($index)
    {
        if ($index >= 0 && $index < $this->getCount()) {
            $arr = $this->flattenPriorities();
            return $arr[$index];
        } else {
            throw new TInvalidDataValueException('list_index_invalid', $index);
        }
    }