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