public function before($content) {
    if (FALSE === (bool) $this) {
      return $this;
    }
    $me = $this->dom();
    $parent = $this->xparent()->dom();
    $new = $this->_contentToDom($content);
    $parent->insertBefore($new, $me);
    return $this;
  }
public function before($content) {
    if (FALSE === (bool) $this) {
      return $this;
    }
    $me = $this->dom();
    $parent = $this->xparent()->dom();
    $new = $this->_contentToDom($content);
    $parent->insertBefore($new, $me);
    return $this;
  }
public function before ( $ content ) { if ( FALSE === ( bool ) $ this ) { return $ this ; } $ me = $ this -> dom ( ) ; $ parent = $ this -> xparent ( ) -> dom ( ) ; $ new = $ this -> _contentToDom ( $ content ) ; $ parent -> insertBefore ( $ new , $ me ) ; return $ this ; }
Add the content before this node.
@param mixed $content
@return \QuipXml\Xml\QuipXmlElement
Add the content before this node .