code: def test_get_variant_type(self, variant, expected_type):
      self.assertEqual(
          vcf_stats._get_variant_type(variant), expected_type
      )
  
imports: import collections
  import json
  import os
  import tempfile
  from absl.testing import absltest
  from absl.testing import parameterized
  import tensorflow
  from deepvariant import testdata
  from deepvariant import vcf_stats
  from third_party.nucleus.io import vcf
  from third_party.nucleus.testing import test_utils
  from third_party.nucleus.util import variant_utils
  from third_party.nucleus.util import variantcall_utils
label_desc: Use image node_id 2 for calling the VcfStatsTest obj's underlying member method code with example usage: obj.test_get_variant_type(variant, expected_type) without return types