request.addRole("role2");
    }

    @Test
    public void test_addField() {
        request.addField("field1");
        request.addField("field2");
    }

    @Test
    public void test_addKind() {
        request.addKind("DOCUMENT");
        request.addKind("QUERY");
    }

    @Test
    public void test_addLang() {
        request.addLang("en");
        request.addLang("ja");
    }