docs: def is_dir(self, follow_symlinks=True):
          """
          Return True if this entry is a directory or a symbolic link pointing to
          a directory; return False if the entry is or points to any other kind
          of file, or if it doesn’t exist anymore.
  
          The result is cached on the os.DirEntry object.
  
          Args:
              follow_symlinks (bool): Follow symlinks.
                  Not supported on cloud storage objects.
  
          Returns:
              bool: True if directory exists.
          """
          try:
              return (self._system.isdir(
                  path=self._path, client_kwargs=self._client_kwargs,
                  virtual_dir=False) or
  
                  # Some directories only exists virtually in object path and
                  # don't have headers.
                  bool(S_ISDIR(self.stat().st_mode)))
  
          except ObjectPermissionError:
              # The directory was listed, but unable to head it or access to its
              # content
              return True