@Override
        public void startElement(final String uri,
                                 final String localName,
                                 final String qName,
                                 final Attributes attributes)
                throws SAXException {
            LOGGER.debug("startElement {} {} {}", uri, localName, qName);
            super.startElement(uri, localName, qName, attributes);
            saxDocumentSerializer.startElement(uri, localName, qName, attributes);
        }
A proof of concept for https://github.com/gchq/stroom/issues/1945
Trying to prove that we can generate a fast infoset vocab
for some xml and then append to it. This is to reduce the volume of data
stored in the LMDB ref data store.
stroom-pipeline/src/test/java/stroom/pipeline/refdata/TestFastInfosetVocab.java