code: boolean handleButtonOnRequest(final Request request) {
  		// Only process on a POST
  		if (!"POST".equals(request.getMethod())) {
  			LOG.warn("RadioButton on a request that is not a POST. Will be ignored.");
  			return false;
  		}
  
  		String value = getRequestValue(request);
  		String current = getValue();
  
  		boolean changed = !Util.equals(value, current);
  
  		if (changed) {
  			setChangedInLastRequest(true);
  			setData(value);
  			doHandleChanged();
  		}
  
  		return changed;
  	}
docs: This method is to be only called by the {@link WRadioButton} that has its value on the request.
  
  @param request the request being responded to.
  @return true if the group has changed, otherwise false