$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_pagerenderer.php']['render-preProcess'][myclasshook::class]
        = myclasshook::class . '->execute';

$objectManager = TYPO3CMSCoreUtilityGeneralUtility::makeInstance('TYPO3\CMSExtbase\Object\ObjectManager');
  $request = $objectManager->get('TYPO3\CMS\Extbase\Mvc\Web\Request');
  TYPO3CMSExtbaseUtilityDebuggerUtility::var_dump($request->getRequestUri);