I&#x27;m not sure how one would encode that information in java. Isn&#x27;t toString() a special case in java? If you try to cast any object to a String, something (String?) will look for the toString class. I&#x27;m not sure what the equivalent would be for a widget that can be perfectly valid to add to another widget both in a hidden, and show()n state?<p>To compare with toString, it&#x27;s more like if you didn&#x27;t do obj.show(), obj.toString() would return the empty string?