Jackalope\Node::getPrimaryItem PHP Method

    public function getPrimaryItem()
    {
        try {
            $primary_item = null;
            $item_name = $this->getPrimaryNodeType()->getPrimaryItemName();
            if ($item_name !== null) {
                $primary_item = $this->session->getItem($this->path . '/' . $item_name);
            }
        } catch (Exception $ex) {
            throw new RepositoryException("An error occured while reading the primary item of the node '{$this->path}': " . $ex->getMessage());
        }
        if ($primary_item === null) {
            throw new ItemNotFoundException("No primary item found for node '{$this->path}'");
        }
        return $primary_item;
    }