Map<String, String> requestParamMap = externalContext
.getRequestParameterMap();
Application application = context.getApplication();
String id = getSelectionInputName(context, grid);
String value = (String) requestParamMap.get(id);
Converter converter = application
.createConverter(ClientSelection.class);
ClientSelection _oldClientSelection = (ClientSelection) grid
.getAttributes().get(CLIENT_SELECTION);
final ClientSelection oldClientSelection = _oldClientSelection == null ? new ClientSelection()
: _oldClientSelection;