class_docstr: The same as SAXExerciser, but without the processing instruction and
  comment before the root element, because S2D can"t handle it
code: def parse(self, _):
      h = self._handler
      h.startDocument()
      h.startElement("html", AttributesImpl({}))
      h.comment("a comment")
      h.processingInstruction("target", "data")
      h.startElement("p", AttributesImpl({"class": "paraclass"}))
      h.characters("text")
      h.endElement("p")
      h.endElement("html")
      h.endDocument()
  
imports: import io
  import unittest
  import xml.sax
  from xml.sax.xmlreader import AttributesImpl
  from xml.sax.handler import feature_external_ges
  from xml.dom import pulldom
  from test.support import findfile
label_desc: Use image node_id 1 for calling the SAX2DOMExerciser obj's underlying member method code with example usage: obj.parse(_) without return types