code: protected function redirectCorrectDomainSystemParams (& $domainParams) {
  		$localizationParamName = static::URL_PARAM_LOCALIZATION;
  		if (isset($domainParams[$localizationParamName])) {
  			$domainParams[$localizationParamName] = $this->redirectLocalizationGetUrlValueAndUnsetGet(
  				$domainParams[$localizationParamName]
  			);
  		}
  	}
docs: When request is redirected by router configured behaviour, this method is
  called to correct localization URL value in domain params array.
  @param array $domainParams
  @return void