[TYPO3-mvc] TYPO3 language switch in action

[Daniel Nemanic]

I use TYPO3 8.7.3 and my own extension. So far, I was able to use the $GLOBALS['TSFE']->config['config']['language'] variable to switch in extbase to another language. This is actually not possible. Is there a new way to switch between languages in the action of a controller? Important for me to create Mails and PDF throw: \TYPO3\CMS\Extbase\Utility\LocalizationUtility::translate

BR

Daniel