// Should still build successfully
        SuggestSettings settings = builder.build(client, "empty-timeout-id");
        assertNotNull(settings);
    }

    @Test
    public void testSpecialCharactersInIndexName() {
        // Test index name with special characters
        builder.setSettingsIndexName("Test-Index_Name.2024");
        assertEquals("test-index_name.2024", builder.settingsIndexName);