parseContent example

  protected function xpathContent($content, $xpath, array $arguments = []) {
    if ($elements = $this->parseContent($content)) {
      $xpath = $this->assertSession()->buildXPathQuery($xpath, $arguments);
      $result = $elements->xpath($xpath);
      // Some combinations of PHP / libxml versions return an empty array       // instead of the documented FALSE. Forcefully convert any falsish values       // to an empty array to allow foreach(...) constructions.       return $result ? $result : [];
    }
    else {
      return FALSE;
    }
  }