code: def _get_thing_ids(cls):
      thing_ids = []
      for i, cat in enumerate(cls.CATEGORY_META_INFO):
          if cat["isthing"]:
              thing_ids.append(i)
      return thing_ids
  
imports: import json
  import copy
  import os
  import numpy
  import paddle
  from paddleseg.transforms import Compose
  from paddlepanseg.cvlibs import build_info_dict
label_desc: Use image node_id 8 for calling the COCOStylePanopticDataset obj's underlying member method code with example usage: obj._get_thing_ids(cls) and returns: thing_ids