DiDom\Element::getLineNo PHP Метод

    public function getLineNo()
    {
        return $this->node->getLineNo();
    }

 public function testGetLineNo()
 {
     $element = new Element('div');
     $this->assertEquals(0, $element->getLineNo());
     $html = '<ul>
         <li>One</li>
         <li>Two</li>
         <li>Three</li>
     </ul>';
     $document = new Document($html, false);
     $this->assertEquals(4, $document->find('li')[2]->getLineNo());
 }