public function buildHeader() {
$header['label'] = t('Label');
$header['logo'] = t('Provider');
$installed_translators = $this->translatorManager
->getLabels();
if (empty($installed_translators)) {
$this
->messenger()
->addError(t("There are no provider plugins available. Please install a provider plugin."));
}
return $header + parent::buildHeader();
}