void checkForLocaleChange(Locale newLocale) {
            if (!localeIsAdapting) {return;}
            if (newLocale.equals(locale)) {return;}
            super.setChanged();
            notifyObservers(newLocale);
        }
stores if the locale should change according to {@link LocaleUtil#getUserLocale()}
fastexcel-test/src/test/java/cn/idev/excel/test/temp/dataformat/DataFormatter1.java