code: @Nullable
    public static ICommonsList <IHCNode> createPasswordConstraintTip (@Nonnull final Locale aDisplayLocale)
    {
      final ICommonsList <String> aTexts = GlobalPasswordSettings.getPasswordConstraintList ()
                                                                 .getAllPasswordConstraintDescriptions (aDisplayLocale);
      if (aTexts.isEmpty ())
        return null;
  
      return HCExtHelper.list2divList (aTexts);
    }
docs: Create a tooltip with all the requirements for a password
  
  @param aDisplayLocale
  Display locale to use.
  @return <code>null</code> if not special constraints are defined.