FluidTYPO3\Vhs\ViewHelpers\Menu\AbstractMenuViewHelper::restoreVariables PHP Method

    public function restoreVariables()
    {
        if (0 < count($this->backupValues)) {
            foreach ($this->backupValues as $var => $value) {
                if (false === $this->templateVariableContainer->exists($var)) {
                    $this->templateVariableContainer->add($var, $value);
                }
            }
        }
    }