code: def root_dir(self) -> Any:
      if not self.repo:
          return None
      try:
          return self.repo.git.rev_parse("--show-toplevel")
      except GitCommandError:
          return None
  
imports: import configparser
  import logging
  import os
  from typing import TYPE_CHECKING, Any, Optional
  from urllib.parse import urlparse, urlunparse
  import wandb
label_desc: Use image node_id 15 for calling the GitRepo obj's underlying member method code with example usage: obj.root_dir() and returns: None, self, None