public static boolean isProperty(@NotNull GrField field) {
    final PsiClass clazz = field.getContainingClass();
    if (clazz == null) return false;
    if (clazz.isInterface() && !GrTraitUtil.isTrait(clazz)) return false;
    final GrModifierList modifierList = field.getModifierList();
    return modifierList == null || !modifierList.hasExplicitVisibilityModifiers();
  }
public static boolean isProperty(@NotNull GrField field)