public function format(SS_HTTPRequest $request)
 {
     $rawNumber = $request->getVar('number');
     $country = $request->getVar('country');
     $format = $request->getVar('format');
     try {
         return LibPhoneNumberField::formatPhoneNumber($rawNumber, $country, $format);
     } catch (\libphonenumber\NumberParseException $e) {
         SS_Log::log($e->getMessage(), SS_Log::DEBUG);
         return $this->httpError(400, $e->getMessage());
     }
 }