private void handleComments(HSLFSlide slide, XHTMLContentHandler xhtml, Set<String> commentAuthors) throws SAXException {
        if (slide.getComments() == null || slide.getComments().isEmpty()) {
            return;
        }

        xhtml.startElement("div", "class", "slide-comments");

        // Comments, if present
        StringBuilder authorStringBuilder = new StringBuilder();
        for (Comment comment : slide.getComments()) {
            authorStringBuilder.setLength(0);
            xhtml.startElement("p", "class", "slide-comment");

            if (! StringUtils.isBlank(comment.getAuthor())) {
                String author = comment.getAuthor();
                authorStringBuilder.append(author);
                if (! commentAuthors.contains(author)) {
                    parentMetadata.add(Office.COMMENT_PERSONS, comment.getAuthor());
                    commentAuthors.add(author);
                }
            }
            if (comment.getAuthorInitials() != null) {
                if (! authorStringBuilder.isEmpty()) {
                    authorStringBuilder.append(" ");
                }
                authorStringBuilder.append("(").append(comment.getAuthorInitials()).append(")");
            }
            if (! authorStringBuilder.isEmpty()) {
                if (comment.getText() != null) {
                    authorStringBuilder.append(" - ");
                }
                xhtml.startElement("b");
                xhtml.characters(authorStringBuilder.toString());
                xhtml.endElement("b");
            }
            if (comment.getText() != null) {
                xhtml.characters(comment.getText());
            }
            xhtml.endElement("p");
        }
        //end comments
        xhtml.endElement("div");
    }
This is the catch-all for embedded objects.  If we didn't come across
them in the shapes in the slides, headers/footers, etc, try to
extract them here.
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-microsoft-module/src/main/java/org/apache/tika/parser/microsoft/HSLFExtractor.java