code: def test_make_gvcfs(self, counts, expecteds):
      allele_counts = self.fake_allele_counter(
          1, counts
      ).summary_counts()
      caller = PlaceholderVariantCaller(0.01, 100)
      gvcfs = list(caller.make_gvcfs(allele_counts))
  
      self.assertLen(gvcfs, len(expecteds))
      for actual, expected in zip(gvcfs, expecteds):
          self.assertGVCF(actual, **expected)
  
imports: from unittest import mock
  from absl.testing import absltest
  from absl.testing import parameterized
  import numpy
  import numpy.testing
  from third_party.nucleus.util import variant_utils
  from third_party.nucleus.util import variantcall_utils
  from deepvariant import testdata
  from deepvariant import variant_caller
  from deepvariant.protos import deepvariant_pb2
label_desc: Use image node_id 9 for calling the VariantCallerTests obj's underlying member method code with example usage: obj.test_make_gvcfs(counts, expecteds) without return types