public function addPersonTeamLink(ChildPersonTeamLink $l)
    {
        if ($this->collPersonTeamLinks === null) {
            $this->initPersonTeamLinks();
            $this->collPersonTeamLinksPartial = true;
        }

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

        return $this;
    }