public function addDealerBrandVersion(ChildDealerBrandVersion $l)
    {
        if ($this->collDealerBrandVersions === null) {
            $this->initDealerBrandVersions();
            $this->collDealerBrandVersionsPartial = true;
        }

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

        return $this;
    }