boolean (@NotNull PsiModifierListOwner owner, boolean checkBases) { Project project = owner.getProject(); NullableNotNullManager manager = NullableNotNullManager.getInstance(project); NullabilityAnnotationInfo info = manager.findEffectiveNullabilityInfo(owner); return info != null && !info.isInferred() && info.getNullability() == Nullability.NULLABLE && (checkBases || info.getInheritedFrom() == null); }