SAX.setDocumentLocator()
SAX.startDocument()
SAX.processingInstruction(document-start, doc)
SAX.startElement(doc)
SAX.characters(
, 1)
SAX.startElement(empty)
SAX.endElement(empty)
SAX.endElement(doc)
SAX.processingInstruction(document-end, doc)
SAX.endDocument()