code: def _parseFile(self, file):
      from xml.parsers.expat import ParserCreate
  
      parser = ParserCreate()
      parser.StartElementHandler = self._startElementHandler
      parser.EndElementHandler = self._endElementHandler
      parser.CharacterDataHandler = self._characterDataHandler
  
      pos = 0
      while True:
          chunk = file.read(BUFSIZE)
          if not chunk:
              parser.Parse(chunk, 1)
              break
          pos = pos + len(chunk)
          if self.progress:
              self.progress.set(pos // 100)
          parser.Parse(chunk, 0)
  
imports: from fontTools import ttLib
  from fontTools.misc.textTools import safeEval
  from fontTools.ttLib.tables.DefaultTable import DefaultTable
  import sys
  import os
  import logging
label_desc: Use image node_id 4 for calling the XMLReader obj's underlying member method code with example usage: obj._parseFile(file) without return types