public @interface PolyAll
Writing @PolyAll is equivalent to writing a polymorphic qualifier for every type system (whether such a qualifier has been declared or not).
The @PolyAll annotation applies to every type qualifier hierarchy for which no explicit qualifier is written. For example, a declaration like @PolyAll @NonNull String s is polymorphic over every type system \emph{except} the nullness type system, for which the type is fixed at @NonNull.
To support @PolyAll in a type system, simply add it to the list of @TypeQualifiers.