public function addDealerAdminVersion(ChildDealerAdminVersion $l)
    {
        if ($this->collDealerAdminVersions === null) {
            $this->initDealerAdminVersions();
            $this->collDealerAdminVersionsPartial = true;
        }

        if (!in_array($l, $this->collDealerAdminVersions->getArrayCopy(), true)) { // only add it if the **same** object is not already associated
            $this->doAddDealerAdminVersion($l);
        }

        return $this;
    }