code: def test_assert_is_point_dataset(self):
      if self.valid:
          assert_is_point_dataset(
              self.dataset, self.n_point, 20, self.no_visible
          )
      else:
          with self.assertRaises(AssertionError):
              assert_is_point_dataset(
                  self.dataset, self.n_point, 20, self.no_visible
              )
  
imports: import numpy
  import unittest
  from chainer.dataset import DatasetMixin
  from chainercv.utils import assert_is_point_dataset
  from chainercv.utils import testing
label_desc: Use image node_id 2 for calling the TestAssertIsPointDataset obj's underlying member method code with example usage: obj.test_assert_is_point_dataset() without return types