private static LocalQuickFix createChangeDefaultNotNullFix(NullableNotNullManager nullableManager, PsiModifierListOwner modifierListOwner) {
    final PsiAnnotation annotation = AnnotationUtil.findAnnotation(modifierListOwner, nullableManager.getNotNulls());
    if (annotation != null) {
      final PsiJavaCodeReferenceElement referenceElement = annotation.getNameReferenceElement();
      if (referenceElement != null) {
        JavaResolveResult resolveResult = referenceElement.advancedResolve(false);
        if (resolveResult.getElement() != null &&
            resolveResult.isValidResult() &&
            !nullableManager.getDefaultNotNull().equals(annotation.getQualifiedName())) {
          return new ChangeNullableDefaultsFix(annotation.getQualifiedName(), null);
        }
      }
    }
    return null;
  }
private static LocalQuickFix createChangeDefaultNotNullFix(NullableNotNullManager nullableManager, PsiModifierListOwner modifierListOwner)