/**
* Check if an attribute can be indexed.
*
* @param AttributeInterface $attribute Entity attribute.
*
* @return boolean
*/
private function canIndexAttribute(AttributeInterface $attribute)
{
$canIndex = $attribute->getBackendType() != 'static';
if ($canIndex && $attribute->getBackendModel()) {
$canIndex = in_array($attribute->getBackendModel(), $this->indexedBackendModels);
}
return $canIndex;
}
