### Question:
XlsxUtils { public static List<String> findMarkers(InputStream is) { if (is == null) return null; return TemplateUtils.findMarkers(loadText(is)); } private  XlsxUtils(); static String loadText(InputStream is); static String loadText(XSSFWorkbook workbook); static List<String> findMarkers(InputStream is); static XSSFWorkbook format(InputStream is,
                                    Map<String, Object> markerValues); static XSSFWorkbook format(XSSFWorkbook workbook,
                                    Map<String, Object> markerValues); static XSSFWorkbook loadDocument(InputStream is); static void formatSheet(XSSFSheet sheet,
                                 Map<String, Object> markerValues, Pattern pattern);  }### Answer:
@Test public void testFindMarkers() throws Exception { String content = XlsxUtils.loadText(this.getDocumentInputStream()); Assert.assertNotNull(content); Assert.assertTrue(content.length() > 0); List<String> markers = XlsxUtils.findMarkers(this .getDocumentInputStream()); Assert.assertNotNull(markers); Assert.assertTrue(markers.size() > 0); Collections.sort(markers); Assert.assertEquals("[title]", markers.toString()); }