/** * Returns what we known about the owner of a node * * @param Node $node * * @return null|array<string,int|string> */ private function getOwnerData($node) { $owner = $node->getOwner(); $ownerData = []; if ($owner) { $ownerData = ['uid' => $owner->getUID(), 'displayname' => $owner->getDisplayName()]; } return $ownerData; }