// Verify that empty optional is returned
        assertNotNull(result);
        assertFalse(result.isPresent());
    }

    // Test getRequestedTimeZone() method
    public void test_getRequestedTimeZone() {
        // Execute
        TimeZone result = provider.getRequestedTimeZone(requestManager);

        // Verify that the central time zone is returned
        assertNotNull(result);

    public OptionalThing<TimeZone> findBusinessTimeZone(final ActionRuntime runtimeMeta, final RequestManager requestManager) {
        return OptionalObject.empty();
    }

    @Override
    public TimeZone getRequestedTimeZone(final RequestManager requestManager) { // not null
        return centralTimeZone; // you can change it if you like
    }

    @Override
    public String toString() {