public function __construct(Storage $parentStorage, EntityInfo $entityInfo, $dbPrefix, $changeInfoFactory, $keyName = 'meta_key', $valueName = 'meta_value')
{
parent::__construct($entityInfo, $dbPrefix);
$this->parentStorage = $parentStorage;
$this->changeInfoFactory = $changeInfoFactory;
$this->keyName = $keyName;
$this->valueName = $valueName;
$this->parentReferenceName = "vp_{$entityInfo->parentReference}";
}