@Override
        public void endElement(String uri, String localName, String qName) throws SAXException {

            if (!inPH) {
                wrappedHandler.endElement(uri, localName, qName);
            }
            if ("sp".equals(localName)) {
                inPH = false;
            }
        }
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