assertNull(badwordpager.versionNo);

        assertEquals(1, badwordpager.getDefaultCurrentPageNumber());
        badwordpager.setAllRecordCount(999);
        assertEquals(999, badwordpager.getAllRecordCount());
        badwordpager.setAllPageCount(999);
        assertEquals(999, badwordpager.getAllPageCount());
        badwordpager.setExistPrePage(true);
        assertTrue(badwordpager.isExistPrePage());

        assertNull(dataconfigpager.versionNo);

        assertEquals(1, dataconfigpager.getDefaultCurrentPageNumber());
        dataconfigpager.setAllRecordCount(999);
        assertEquals(999, dataconfigpager.getAllRecordCount());
        dataconfigpager.setAllPageCount(999);
        assertEquals(999, dataconfigpager.getAllPageCount());
        dataconfigpager.setExistPrePage(true);
        assertTrue(dataconfigpager.isExistPrePage());

        assertNull(boostdocpager.createdTime);
        assertNull(boostdocpager.versionNo);

        boostdocpager.setAllRecordCount(999);
        assertEquals(999, boostdocpager.getAllRecordCount());
        boostdocpager.setAllPageCount(999);
        assertEquals(999, boostdocpager.getAllPageCount());
        boostdocpager.setExistPrePage(true);
        assertTrue(boostdocpager.isExistPrePage());

        assertEquals(1, crawlinginfopage.getDefaultCurrentPageNumber());
        crawlinginfopage.setAllRecordCount(999);
        assertEquals(999, crawlinginfopage.getAllRecordCount());
        crawlinginfopage.setAllPageCount(999);
        assertEquals(999, crawlinginfopage.getAllPageCount());
        crawlinginfopage.setExistPrePage(true);
        assertTrue(crawlinginfopage.isExistPrePage());

        assertEquals(1, duplicatehostpager.getDefaultCurrentPageNumber());
        duplicatehostpager.setAllRecordCount(999);
        assertEquals(999, duplicatehostpager.getAllRecordCount());
        duplicatehostpager.setAllPageCount(999);
        assertEquals(999, duplicatehostpager.getAllPageCount());
        duplicatehostpager.setExistPrePage(true);
        assertTrue(duplicatehostpager.isExistPrePage());

        assertEquals(1, charmappingpager.getDefaultCurrentPageNumber());

        charmappingpager.setAllRecordCount(999);
        assertEquals(999, charmappingpager.getAllRecordCount());
        charmappingpager.setAllPageCount(999);
        assertEquals(999, charmappingpager.getAllRecordCount());
        charmappingpager.setExistPrePage(true);
        assertTrue(charmappingpager.isExistPrePage());

        assertNull(accesstokenpager.createdTime);
        assertNull(accesstokenpager.versionNo);

        accesstokenpager.setAllRecordCount(999);
        assertEquals(999, accesstokenpager.getAllRecordCount());
        accesstokenpager.setAllPageCount(999);
        assertEquals(999, accesstokenpager.getAllPageCount());
        accesstokenpager.setExistPrePage(true);
        assertTrue(accesstokenpager.isExistPrePage());

    assertThat(formatDuration(  -999_499_999L)).isEqualTo("-999 ms")
    assertThat(formatDuration(  -998_500_000L)).isEqualTo("-999 ms")
    assertThat(formatDuration(  -998_499_999L)).isEqualTo("-998 ms")
    assertThat(formatDuration(    -1_499_999L)).isEqualTo(" -1 ms")
    assertThat(formatDuration(      -999_500L)).isEqualTo(" -1 ms")
    assertThat(formatDuration(      -999_499L)).isEqualTo("-999 µs")

            "0x82,Called name not present", "0x83,Called name present, but insufficient resources", "0x8F,Unspecified error",
            "999,Unknown error code: 999" })
    @DisplayName("getErrorString for SSN service errors")
    void testSessionServiceErrors(int errorCode, String description) {
        int errSsn = NbtException.ERR_SSN_SRVC;

        // Test getId method from parent class
        StopwordsItem item1 = new StopwordsItem(0, "word1");
        assertEquals(0, item1.getId());

        StopwordsItem item2 = new StopwordsItem(999, "word2");
        assertEquals(999, item2.getId());

        StopwordsItem item3 = new StopwordsItem(-1, "word3");
        assertEquals(-1, item3.getId());
    }

    public void test_createMode() {