@NotNull static Annotated from(@NotNull PsiModifierListOwner owner) {
      NullableNotNullManager manager = NullableNotNullManager.getInstance(owner.getProject());
      return new Annotated(manager.findExplicitNullabilityAnnotation(owner, Collections.singleton(Nullability.NOT_NULL)),
                           manager.findExplicitNullabilityAnnotation(owner, Collections.singleton(Nullability.NULLABLE)));
    }
@NotNull static Annotated from(@NotNull PsiModifierListOwner owner)