code: def start_key(self, key: str) -> str:
      return f"<!--bot-comment-{key}-start-->"
  
file_path: tvm/ci/scripts/github/github_commenter.py
imports: import re
  import logging
  import sys
  from pathlib import Path
  from typing import Dict, Tuple, Any, Optional, List, Union
  from git_utils import GitHubRepo
label_desc: Use image node_id 5 for calling the BotCommentBuilder obj's underlying member method code with example usage: obj.start_key(key) and returns: str, key, str