protected function beforeRenderChildrensWord()
 {
     $num = new ArbitraryCompositeNode('w:numPr');
     $this->getPPr()->addNode($num);
     $num->addNode(new ArbitraryNode('w:ilvl', array('w:val' => $this->getLevel())));
     $num->addNode(new ArbitraryNode('w:numId', array('w:val' => '1')));
     return parent::beforeRenderChildrensWord();
 }