Elementor\Widget_WordPress::_register_controls PHP Метод

    protected function _register_controls()
    {
        $this->add_control('wp', ['label' => __('Form', 'elementor'), 'type' => Controls_Manager::WP_WIDGET, 'widget' => $this->get_name(), 'id_base' => $this->get_widget_instance()->id_base]);
    }