get_widget_form example

$new_instance,
                $old_instance,
                $widget_object
            );
        }

        $serialized_instance = serialize( $instance );
        $widget_key          = $wp_widget_factory->get_widget_key( $id );

        $response = array(
            'form'     => trim(
                $this->get_widget_form(
                    $widget_object,
                    $instance
                )
            ),
            'preview'  => trim(
                $this->get_widget_preview(
                    $widget_key,
                    $instance
                )
            ),
            'instance' => array(