public function render_content()
 {
     global $wp_registered_widgets;
     require_once ABSPATH . '/wp-admin/includes/widgets.php';
     $widget = $wp_registered_widgets[$this->widget_id];
     if (!isset($widget['params'][0])) {
         $widget['params'][0] = array();
     }
     $args = array('widget_id' => $widget['id'], 'widget_name' => $widget['name']);
     $args = wp_list_widget_controls_dynamic_sidebar(array(0 => $args, 1 => $widget['params'][0]));
     $control = Widget_Customizer::get_widget_control($args);
     echo $control;
     // xss ok
 }