Radiobuttons and UiBinder

Lets say I have three radio buttons belonging to a group.   Upon some event, I would like to retrieve the value of the radio button selected in my UiBInder class.

One possible approach, I guess, is to declare a ui:field for each of the radio buttons(like in the example below) and thus retrieve the selected value in the UiBInder class.

<g:RadioButton ui:field="value1" value="value1" ui:name="rbname">value1</g:RadioButton>
<g:RadioButton ui:field="value2" value="value2" ui:name="rbname">value2</g:RadioButton>
<g:RadioButton ui:field="value3" value="value3" ui:name="rbname">value3</g:RadioButton>

Is there any other way to achieve this without having to declare a ui:filed for each and every radio button of a group.

Note: I would like a solution that does NOT involve "form" or FormPanel.

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