Elementor\TemplateLibrary\Manager::handle_ajax_request PHP Method

    private function handle_ajax_request($ajax_request)
    {
        $result = call_user_func([$this, $ajax_request], $_REQUEST);
        $request_type = !empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) === 'xmlhttprequest' ? 'ajax' : 'direct';
        if ('direct' === $request_type) {
            $callback = 'on_' . $ajax_request;
            if (method_exists($this, $callback)) {
                $this->{$callback}($result);
            }
        }
        if (is_wp_error($result)) {
            if ('ajax' === $request_type) {
                wp_send_json_error($result->get_error_message());
            }
            $callback = "on_{$ajax_request}_error";
            if (method_exists($this, $callback)) {
                $this->{$callback}($result);
            }
            die;
        }
        if ('ajax' === $request_type) {
            wp_send_json_success($result);
        }
        $callback = "on_{$ajax_request}_success";
        if (method_exists($this, $callback)) {
            $this->{$callback}($result);
        }
        die;
    }