protected function setCollectionCollectionItem($collection_item_id)
    {
        $this->data_collection_item = array();

        if (is_numeric($collection_item_id)) {

            $this->data_collection_item = $this->collection_item->get($collection_item_id);

            if (empty($this->data_collection_item)) {
                $this->outputHttpStatus(404);
            }

            $this->prepareCollectionItem($this->data_collection_item);
        }
    }