@Test
    @DisplayName("Custom options are propagated to the AppConfigurationEntry")
    void customOptions_arePropagated() {
        // Arrange
        Map<String, Object> opts = new HashMap<>();
        opts.put("useKeyTab", "true");
        opts.put("storeKey", "true");
        opts.put("principal", "******@****.***");
        StaticJAASConfiguration cfg = new StaticJAASConfiguration(opts);

        // Act