public function after($content) {
    if (FALSE === (bool) $this) {
      return $this;
    }
    $me = $this->dom();
    $parent = $this->xparent()->dom();
    $new = $this->_contentToDom($content);
    if (isset($me->nextSibling)) {
      $parent->insertBefore($new, $me->nextSibling);
    }
    else {
      $parent->appendChild($new);
    }
    return $this;
  }