code: def get_subfolders(self):
          
          headers = self.headers
          endpoint = 'https://outlook.office.com/api/v2.0/me/MailFolders/' + self.id + '/childfolders'
  
          r = requests.get(endpoint, headers=headers)
  
          if check_response(r):
              return self._json_to_folders(self.account, r.json())
docs: Retrieve all child Folders inside of this Folder.
  
          Raises:
              AuthError: Raised if Outlook returns a 401, generally caused by an invalid or expired access token.
  
          Returns:
              List[:class:`Folder <pyOutlook.core.folder.Folder>`]