/**
* Get attribute alias as "entity_type/attribute_code"
*
* @param \Magento\Eav\Model\Entity\AbstractEntity $entity exclude this entity
* @return string
*/
public function getAlias($entity = null)
{
$alias = '';
if ($entity === null || $entity->getType() !== $this->getEntity()->getType()) {
$alias .= $this->getEntity()->getType() . '/';
}
$alias .= $this->getAttributeCode();
return $alias;
}