code: def test_get_example(self):
      def callback(indices, key_indices):
          self.assertEqual(indices, [3])
          self.assertIsNone(key_indices)
  
      dataset = dummy_dataset.DummyDataset(
          mode=self.mode,
          return_array=self.return_array,
          callback=callback,
      )
  
      if self.mode is tuple:
          expected = tuple(dataset.data[:, 3])
      elif self.mode is dict:
          expected = dict(zip(("a", "b", "c"), dataset.data[:, 3]))
      elif self.mode is None:
          expected = dataset.data[0, 3]
  
      self.assertEqual(dataset.get_example(3), expected)
  
file_path: chainer/tests/chainer_tests/dataset_tests/tabular_tests/test_tabular_dataset.py
imports: import unittest
  import numpy
  from chainer import testing
  from chainer_tests.dataset_tests.tabular_tests import dummy_dataset
label_desc: Use image node_id 3 for calling the TestTabularDataset obj's underlying member method code with example usage: obj.test_get_example() without return types