code: def test_doc_with_comments():
      """
      Test that a doc with comments gets converted back with comments
      """
      doc = CoNLL.conll2doc(input_str=RUSSIAN_SAMPLE)
      check_russian_doc(doc)
  
imports: import io
  import pytest
  import tempfile
  from zipfile import ZipFile
  import stanza
  from stanza.utils.conll import CoNLL
  from stanza.models.common.doc import Document
  from stanza.tests import *
label_desc: Use image node_id 8 for calling a global function with example usage: test_doc_with_comments() without return types