TimeZone second = provider.provide();
        assertSame("Provider should return the same TimeZone instance", first, second);
    }

    public void test_createFinalTimeZoneProvider_toStringContainsTimeZoneId() {
        // When
        DfFinalTimeZoneProvider provider = curtainBeforeHook.createFinalTimeZoneProvider();

        // Then
        String toString = provider.toString();