Request::flush PHP Method

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

 /**
  * Execute the CURL HTTP POST request to aspsms server. Below a description of the different actions and their values/options:
  *
  * @see https://webservice.aspsms.com/aspsmsx2.asmx
  * @param  string       $action Contains the aspsms service defined action name like: CheckCredits, InquireDeliveryNotifications, SendTextSMS
  * @param  array        $values The values which needs to be passed to this action
  * @return string/mixed
  */
 private function request($action, array $values = array())
 {
     // build new AspsmsRequest-Object
     $request = new Request($this->server . $action, $this->prepareValues($values));
     // transfer the request
     $response = $request->transfer();
     // flush request class
     $request->flush();
     // flush local settings
     $this->flush();
     // return request response to its executed method
     return $response;
 }