protected function backupSwitchState()
    {
        if ($this->renderingContext->getViewHelperVariableContainer()->exists(\TYPO3\Fluid\ViewHelpers\SwitchViewHelper::class, 'switchExpression')) {
            $this->backupSwitchExpression = $this->renderingContext->getViewHelperVariableContainer()->get(\TYPO3\Fluid\ViewHelpers\SwitchViewHelper::class, 'switchExpression');
        }
        if ($this->renderingContext->getViewHelperVariableContainer()->exists(\TYPO3\Fluid\ViewHelpers\SwitchViewHelper::class, 'break')) {
            $this->backupBreakState = $this->renderingContext->getViewHelperVariableContainer()->get(\TYPO3\Fluid\ViewHelpers\SwitchViewHelper::class, 'break');
        }
    }