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

    protected function getLabelsByLanguageKey($locallang, $languageKey)
    {
        $labels = [];
        if (false === empty($locallang[$languageKey])) {
            $labels = $locallang[$languageKey];
        } elseif (false === empty($locallang['default'])) {
            $labels = $locallang['default'];
        }
        return $labels;
    }