@Override
        public void endElement(String uri, String localName, String qName) throws SAXException {
            if ("cm".equals(localName)) {

                xhtml.startElement("p", "class", "slide-comment");

                String authorString = commentAuthors.getName(commentAuthorId);
                String authorInitials = commentAuthors.getInitials(commentAuthorId);
                if (authorString != null || authorInitials != null) {
                    xhtml.startElement("b");
                    boolean authorExists = false;
                    if (authorString != null) {
                        xhtml.characters(authorString);
                        authorExists = true;
                    }
                    if (authorExists && authorInitials != null) {
                        xhtml.characters(" (");
                    }
                    if (authorInitials != null) {
                        xhtml.characters(authorInitials);
                    }
                    if (authorExists && authorInitials != null) {
                        xhtml.characters(")");
                    }
                    xhtml.endElement("b");
                }
                xhtml.characters(commentBuffer.toString());
                xhtml.endElement("p");

                commentBuffer.setLength(0);
                commentAuthorId = null;
            }
        }
In PowerPoint files, slides have things embedded in them,
and slide drawings which have the images
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-microsoft-module/src/main/java/org/apache/tika/parser/microsoft/ooxml/SXSLFPowerPointExtractorDecorator.java