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

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

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