public String fromObject(Object obj,
    String resultCode,
    Writer out) throws IOException 
{
        throw new IOException("Conversion from Object to '"+getContentType()+"' is not supported");
}

 public String getContentType() 
{
        return CONTENT_TYPE;
}

 public String getExtension() 
{
        return null;
}

The extension is not used by this handler

 public  void toObject(Reader in,
    Object target) 
{

}

No transformation is required as the framework handles this data