public function initDealerFolderVersions($overrideExisting = true)
    {
        if (null !== $this->collDealerFolderVersions && !$overrideExisting) {
            return;
        }
        $this->collDealerFolderVersions = new ObjectCollection();
        $this->collDealerFolderVersions->setModel('\Dealer\Model\DealerFolderVersion');
    }