}

    @Test
    public void test_buildGoUrl_nullDocId() {
        assertNull(chatClient.testBuildGoUrl("", null, "query456", 1710000000L, 0));
    }

    @Test
    public void test_buildGoUrl_nullQueryId() {
        assertNull(chatClient.testBuildGoUrl("", "doc123", null, 1710000000L, 0));
    }

    @Test
    public void test_buildGoUrl_encodesSpecialCharacters() {