code: def test_sbd_instance_segmentation_dataset(self):
      assert_is_instance_segmentation_dataset(
          self.dataset,
          len(sbd_instance_segmentation_label_names),
          n_example=10,
      )
  
file_path: chainercv/tests/datasets_tests/sbd_tests/test_sbd_instance_segmentation_dataset.py
imports: import unittest
  from chainer import testing
  from chainer.testing import attr
  from chainercv.datasets import sbd_instance_segmentation_label_names
  from chainercv.datasets import SBDInstanceSegmentationDataset
  from chainercv.utils import assert_is_instance_segmentation_dataset
label_desc: Use image node_id 2 for calling the TestSBDInstanceSegmentationDataset obj's underlying member method code with example usage: obj.test_sbd_instance_segmentation_dataset() without return types