public function tableHeaders(Entity $entity, array $allowed)
{
$labels = [];
$attributes = $entity->getAttributes();
foreach ($allowed as $label => $attribute) {
// use label provided
if (is_string($label)) {
$labels[] = $label;
// use entity config label
} elseif (isset($attributes[$attribute]['label'])) {
$labels[] = $attributes[$attribute]['label'];
// use the attribute code
} else {
$labels[] = $attribute;
}
}
return $labels;
}
