@Test
    public void render_nested_variables() {
        QuteTemplateEngine engine = new QuteTemplateEngine(CONFIG);

        Foo test = new Foo();

        String rendered = engine.applyTemplate(
             "Hello, {test.blah}",
             Map.of("test", test)
        );
        assertThat(rendered).isEqualTo("Hello, 231");
    }
@author Marc Savy {@literal <marc@blackparrotlabs.io>}
manager/test/api/src/test/java/io/apiman/manager/api/notifications/email/QuteTemplateEngineTest.java