public UserDataElement(String name) 
{
        super(name);
}

 public UserDataElement(QName qname) 
{
        super(qname);
}

 public Object clone() 
{
        UserDataElement answer = (UserDataElement) super.clone();
        if (answer != this) {
            answer.data = getCopyOfUserData();
        }
        return answer;
}

 protected Element createElement(String name) 
{
        Element answer = getDocumentFactory().createElement(name);
        answer.setData(getCopyOfUserData());
        return answer;
}

 protected Element createElement(QName qName) 
{
        Element answer = getDocumentFactory().createElement(qName);
        answer.setData(getCopyOfUserData());
        return answer;
}

 protected Object getCopyOfUserData() 
{
        return data;
}

If a deep copy of user data is required whenever the clone() or createCopy() methods are called on this element then this method should return a clone of the user data

 public Object getData() 
{
        return data;
}

 public  void setData(Object data) 
{
        this.data = data;
}

 public String toString() 
{
        return super.toString() + " userData: " + data;
}