@Documented @TypeQualifier @PolymorphicQualifier @Retention(value=RUNTIME) @Target(value={TYPE_USE,TYPE_PARAMETER}) public @interface PolyNull
Any method written using @PolyNull conceptually has two versions: one in which every instance of @PolyNull has been replaced by @NonNull, and one in which every instance of @PolyNull has been replaced by @Nullable.