SAX.setDocumentLocator()
SAX.startDocument()
SAX.comment( Having an external DTD makes undeclared entities a warning. )
SAX.internalSubset(doc, , foo)
SAX.externalSubset(doc, , foo)
SAX.startElementNs(doc, NULL, NULL, 0, 0, 0)
SAX.characters(
    , 5)
SAX.getEntity(undeclared)
SAX.warning: Entity 'undeclared' not defined
SAX.startElementNs(elem, NULL, NULL, 0, 1, 0, attr='"/>
...', 0)
SAX.endElementNs(elem, NULL, NULL)
SAX.characters(
    , 5)
SAX.startElementNs(elem, NULL, NULL, 0, 0, 0)
SAX.getEntity(undeclared)
SAX.warning: Entity 'undeclared' not defined
SAX.reference(undeclared)
SAX.endElementNs(elem, NULL, NULL)
SAX.characters(
, 1)
SAX.endElementNs(doc, NULL, NULL)
SAX.endDocument()