public function getSiblings($includeNode = false, Criteria $criteria = null, ConnectionInterface $con = null)
    {
        if ($this->isRoot()) {
            return array();
        } else {
            $query = ChildCategoryQuery::create(null, $criteria)
                ->childrenOf($this->getParent($con))
                ->orderByBranch();
            if (!$includeNode) {
                $query->prune($this);
            }

            return $query->find($con);
        }
    }