code: def _test_template(self, instances_lst):
      acc = CseAnnotationsAccumulator()
      for instances in instances_lst:
          acc.accumulate(instances)
      packed_anns = acc.pack()
      self._check_correspondence(packed_anns, instances_lst)
  
file_path: detectron2/projects/DensePose/tests/test_cse_annotations_accumulator.py
imports: import unittest
  import torch
  from detectron2.structures import Boxes, BoxMode, Instances
  from densepose.modeling.losses.embed_utils import CseAnnotationsAccumulator
  from densepose.structures import DensePoseDataRelative, DensePoseList
label_desc: Use image node_id 5 for calling the TestCseAnnotationsAccumulator obj's underlying member method code with example usage: obj._test_template(instances_lst) without return types