public function edit(array $args)
{
$category = Category::find($this->config->get('categoryId'));
$item = null;
if (isset($args[$this->config->get('id') . 'ItemId'])) {
$item = CategoryItem::find($args[$this->config->get('id') . 'ItemId']);
}
$this->addMergeData(['categoryItems' => $category->items, 'categoryItem' => $item]);
return parent::edit($args);
}