code: def save_annotation(
      self, source_filename, target_filename, coverage_xml=None
  ):
      with Utils.open_source_file(source_filename) as f:
          code = f.read()
      generated_code = self.code.get(source_filename, {})
      c_file = Utils.decode_filename(os.path.basename(target_filename))
      html_filename = os.path.splitext(target_filename)[0] + ".html"
  
      with codecs.open(
          html_filename, "w", encoding="UTF-8"
      ) as out_buffer:
          out_buffer.write(
              self._save_annotation(
                  code,
                  generated_code,
                  c_file,
                  source_filename,
                  coverage_xml,
              )
          )
  
imports: from __future__ import absolute_import
  import os
  import os.path
  import re
  import codecs
  import textwrap
  from datetime import datetime
  from functools import partial
  from collections import defaultdict
  from .None import Version
  from .Code import CCodeWriter
  from ..None import Utils
label_desc: Use image node_id 7 for calling the AnnotationCCodeWriter obj's underlying member method code with example usage: obj.save_annotation(source_filename, target_filename, coverage_xml) without return types