setDocumentLocator(locator={columnNumber=1, lineNumber=1})
startDocument()
   skippedEntity(name="foo")
   startElement(namespaceURI="", localName="doc", qName="doc", atts=[{localName="a", qName="a", uri="", type="CDATA", value=""}])
   endElement(namespaceURI="", localName="doc", qName="doc")
endDocument()