bool Window::writeAutoChildWindowXML(XMLSerializer& xml_stream) const
{
    
    // just stop now if we are'nt allowed to write XML
    if (!d_allowWriteXML)
    {    
        return false;
    }    
    // we temporarily output to this string stream to see if have to do the tag at all. // Make sure this stream does UTF-8 
    std::ostringstream ss;
    XMLSerializer xml(ss);
    xml.openTag("AutoWindow");
    // Create the XML Child Tree 
    // write out properties.
    writePropertiesXML(xml);
    // write out attached child windows.
    writeChildWindowsXML(xml);
    xml.closeTag();
    if (xml.getTagCount() <= 1) 
    {    
        return false;
    }    
    // output opening AutoWindow tag
    xml_stream.openTag("AutoWindow");
    // extract the name suffix
    String suffix(getName(), getParent()->getName().length(), String::npos);
    // write name suffix attribute
    xml_stream.attribute("NameSuffix", suffix);
    // Inefficient : do the XML serialization again 
    // write out properties.
    writePropertiesXML(xml_stream);
    // write out attached child windows.
    writeChildWindowsXML(xml_stream);
    xml_stream.closeTag();
    return true;
}