public function initPermissionsRelatedById($overrideExisting = true)
    {
        if (null !== $this->collPermissionsRelatedById && !$overrideExisting) {
            return;
        }
        $this->collPermissionsRelatedById = new ObjectCollection();
        $this->collPermissionsRelatedById->setModel('\Alchemy\Component\Cerberus\Model\Permission');
    }