FluidTYPO3\Vhs\ViewHelpers\Resource\LanguageViewHelper::initializeArguments PHP Method

    public function initializeArguments()
    {
        $this->registerAsArgument();
        $this->registerArgument('extensionName', 'string', 'Name of the extension', false, null);
        $this->registerArgument('path', 'string', 'Absolute or relative path to the locallang file', false, self::LOCALLANG_DEFAULT);
        $this->registerArgument('languageKey', 'string', 'Key for getting translation of a different than current initialized language', false, null);
    }