SAX.setDocumentLocator()
SAX.startDocument()
SAX.startElement(dia:diagram, xmlns:dia='http://www.lysator.liu.se/~alla/dia/')
SAX.characters(
  , 3)
SAX.startElement(dia:diagramdata, dia:testattr='test')
SAX.endElement(dia:diagramdata)
SAX.characters(
, 1)
SAX.endElement(dia:diagram)
SAX.endDocument()