public void test_evaluate_complexObjectParameters() {
        final Map<String, Object> params = new HashMap<>();
        final Map<String, String> nestedMap = new HashMap<>();
        nestedMap.put("name", "John");
        nestedMap.put("role", "Developer");
        params.put("user", nestedMap);

        assertEquals("John", groovyEngine.evaluate("return user.name", params));