protected function _namespaceNode()
    {
        $this->_codeNode();
        $this->_flushUses();
        $body = $this->_stream->current();
        $name = $this->_stream->next([';', '{']);
        $this->_states['body'] .= $body;
        $node = new BlockDef($body . $name, 'namespace');
        $node->hasMethods = false;
        $node->name = trim(substr($name, 0, -1));
        $this->_states['current'] = $this->_root;
        $this->_contextualize($node);
        return $this->_states['current'] = $node->namespace = $node;
    }