static @NotNull LinkedHashSet<PsiElement> getOwnChildren(@NotNull PsiClass aClass) {
    LinkedHashSet<PsiElement> members = new LinkedHashSet<>();
    addPhysicalElements(aClass.getFields(), members, aClass);
    addPhysicalElements(aClass.getMethods(), members, aClass);
    addPhysicalElements(aClass.getInnerClasses(), members, aClass);
    addPhysicalElements(aClass.getInitializers(), members, aClass);
    return members;
  }
static @NotNull LinkedHashSet<PsiElement> getOwnChildren(@NotNull PsiClass aClass)