Request::acceptsJson PHP Method

        public static function acceptsJson()
        {
            return \Illuminate\Http\Request::acceptsJson();
        }

 /**
  * Asking if the request is a type of AJAX request.
  *
  * @param  \Illuminate\Http\Request $request
  *
  * @return bool
  */
 protected function areYouAnAjax(Request $request)
 {
     return $request->ajax() || $request->wantsJson() || $request->acceptsJson() || $request->isJson();
 }