code: public static <T> I18nPool<T> getInstance(boolean multiLocale) {
  		if (multiLocale) {
  			return new LocalePool<T>();
  		} else {
  			return new SimplePool<T>();
  		}
  	}
docs: Create new I18N pool instance. If multiple locale support is not requested this factory creates a simplified, optimized
  I18N pool instance. In this case, if optional <code>locale</code> parameter is provided, it is silently ignored, see
  {@link I18nPool} interface.
  <p>
  For I18N pool with multiple locale support returned instance is actually a map of maps. Outer map uses locale language
  tag for key while inner map uses object name.
  
  @param multiLocale flag for multiple locale support.
  @param <T> instance type.
  @return new I18N pool instance.