public function loadEssentialAssets() {
        /**
         * Return `false` with this hook to prevent item page CSS from being loaded
         *
         * @important
         * @param bool $flag Default: `true`
         */
        if (apply_filters('wcexwl_filter_item_page_load_css', true)) {
            // load semantic-ui and common css
            Utils::loadCommonCss();
            Semantic::loadButtonCss();
            Semantic::loadLoaderCss();

            // load css for page
            wp_enqueue_style(
                'wcexwl-item-page',
                WCEXWL_PLUGIN_URL . '/src/Styles/item.css',
                [],
                WCEXWL_VERSION,
                false
            );
        }

        // load JS client SDK
        $this->master->loadClientSdk();

        /**
         * Fires after all item page common/default JS/CSS has been enqueued
         *
         * Use this hook to enqueue your own JS/CSS on the item page if necessary.
         *
         * @important
         */
        do_action('wcexwl_item_page_on_load_assets');

        $this->loadImplementationAssets();
    }