code: def _get_all_folders(self):
      folders = []
      for collection in self.gc.listCollection():
          for folder in self.gc.listFolder(
              parentId=collection["_id"], parentFolderType="collection"
          ):
              folders.append(folder["_id"])
      return folders
  
imports: import logging
  import os
  import pathlib
  from io import BytesIO
  from pathlib import Path
  from typing import Any, Dict, List, Optional
  import girder_client
  import numpy
  from PIL import Image
  from monailabel.interfaces.datastore import Datastore, DefaultLabelTag
  from monailabel.utils.others.generic import md5_digest
label_desc: Use image node_id 20 for calling the DSADatastore obj's underlying member method code with example usage: obj._get_all_folders() and returns: folders