@InvisibleQualifier @SubtypeOf(value={}) @DefaultQualifierInHierarchy @Target(value={TYPE_USE,TYPE_PARAMETER}) @TargetLocations(value={EXPLICIT_LOWER_BOUND,EXPLICIT_UPPER_BOUND}) public @interface I18nUnknownFormat
A type annotation indicating that the run-time value might or might not be a valid i18n format string.