function themify_builder_init()
{
    global $ThemifyBuilder, $Themify_Builder_Layouts;
    if (class_exists('Themify_Builder')) {
        if (Themify_Builder_Model::builder_check()) {
            $Themify_Builder_Layouts = new Themify_Builder_Layouts();
            $ThemifyBuilder = new Themify_Builder();
            $ThemifyBuilder->init();
            $themify_builder_plugin_compat = new Themify_Builder_Plugin_Compat();
            $themify_builder_import_export = new Themify_Builder_Import_Export();
            // Themify Shortcodes Editor Button: load required files.
            themify_wpeditor_add_shortcodes_button();
        }
    }
    // class_exists check
    if (is_admin() && current_user_can('update_plugins')) {
        include THEMIFY_BUILDER_DIR . '/themify-builder-updater.php';
    }
}
         * Themify - Admin Menu
         *******************************************************/
        add_action('admin_menu', 'themify_admin_nav');
        /**
         * Themify Updater - In multisite, it's only available to super admins.
         **********************************************************************/
        if (is_multisite() && is_super_admin()) {
            require_once THEMIFY_DIR . '/themify-updater.php';
        } elseif (!is_multisite()) {
            require_once THEMIFY_DIR . '/themify-updater.php';
        }
    }
    /**
     * Add buttons to TinyMCE
     *******************************************************/
    themify_wpeditor_add_shortcodes_button();
    /**
     * Enqueue jQuery and other scripts
     *******************************************************/
    add_action('admin_enqueue_scripts', 'themify_enqueue_scripts');
    /**
     * Display additional ID column in categories list
     * @since 1.1.8
     */
    add_filter('manage_edit-category_columns', 'themify_custom_category_header', 10, 2);
    add_filter('manage_category_custom_column', 'themify_custom_category', 10, 3);
    /**
     * Ajaxify admin
     *******************************************************/
    require_once THEMIFY_DIR . '/themify-wpajax.php';
}