SuggestItem.Kind.DOCUMENT);
        item.setTimestamp(ZonedDateTime.now());

        String bulkLine = SuggestUtil.createBulkLine("test_index", "_doc", item);
        assertNotNull(bulkLine);
        assertTrue(bulkLine.contains("test_index"));
        assertTrue(bulkLine.contains("_doc"));
        assertTrue(bulkLine.contains("test text"));

     * @return a string representing the bulk line for OpenSearch indexing
     * @throws SuggesterException if an I/O error occurs during the creation of the bulk line
     */
    public static String createBulkLine(final String index, final String type, final SuggestItem item) {
        if (item == null || item.getId() == null || item.getText() == null) {