code: private static void createSubAccountBySettingClient() {
      try {
        SubaccountCreateResponse subaccount = Subaccount.creator("Test 2")
          .enabled(true)
          .client(client)
          .create();
        System.out.println(subaccount);
      } catch (PlivoRestException | IOException e) {
        e.printStackTrace();
      }
    }
docs: create subaccount with different client settings