private static boolean isImmutableField(@NotNull GrField field) {
    GrModifierList fieldModifierList = field.getModifierList();
    if (fieldModifierList != null && fieldModifierList.hasExplicitVisibilityModifiers()) return false;

    PsiClass aClass = field.getContainingClass();
    if (aClass == null) return false;

    return GrImmutableUtils.hasImmutableAnnotation(aClass);
  }
private static boolean isImmutableField(@NotNull GrField field)