@Test
    public void testCommentPPTX() throws Exception {
        XMLResult r = getXML("testPPT_comment.pptx", parseContext);
        assertContains("<p class=\"slide-comment\"><b>Allison, Timothy B. (ATB)", r.xml);
    }
For the PowerPoint formats we don't currently support, ensure that
we don't break either
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-microsoft-module/src/test/java/org/apache/tika/parser/microsoft/ooxml/SXSLFExtractorTest.java