code: def _ParseFile(self, file_obj, line_parser):
      
      lines = [
          l.strip() for l in utils.ReadFileBytesAsUnicode(file_obj).splitlines()
      ]
      try:
        for index, line in enumerate(lines):
          if line:
            line_parser(line)
      except (IndexError, KeyError) as e:
        raise parser.ParseError("Invalid file at line %d: %s" % (index + 1, e))
docs: Process a file line by line.
  
      Args:
        file_obj: The file to parse.
        line_parser: The parser method used to process and store line content.
  
      Raises:
        parser.ParseError if the parser is unable to process the line.