@UiHandler("btnClearRange")
void onClearRange(ClickEvent e) {
range.clearErrorOrSuccess();
}
@UiHandler("btnErrorRange")
void onErrorRange(ClickEvent e) {
range.setError("This is an error message for range.");
}
@UiHandler("btnSuccessRange")
void onSuccessRange(ClickEvent e) {
range.setSuccess("This is a success message for range.");
}