@Documented @Retention(value=RUNTIME) @Target(value={TYPE_USE,TYPE_PARAMETER}) @TargetLocations(value={EXPLICIT_LOWER_BOUND,EXPLICIT_UPPER_BOUND}) @SubtypeOf(value={UnderInitialization.class,Initialized.class}) public @interface FBCBottom
The "FBC" in the name stands for "Freedom Before Commitment", an approach that the Initialization Checker builds upon.