code: def test_gvcfs_counts(self, include_gvcfs):
      # Only tests the 'gvcfs' creation part of calls_and_gvcfs. The `calls`
      # portion of this method needs to be tested in subclasses, which have
      # implemented the get_candidates method.
      counts = [
          (0, 0, "A"),
          (10, 10, "G"),
          (0, 0, "G"),
          (0, 0, "G"),
          (10, 10, "T"),
      ]
      caller = PlaceholderVariantCaller(0.01, 100)
      allele_counter = self.fake_allele_counter(10, counts)
      allele_counter_dict = {"SAMPLE_ID": allele_counter}
      _, gvcfs = caller.calls_and_gvcfs(
          allele_counters=allele_counter_dict,
          target_sample="SAMPLE_ID",
          include_gvcfs=include_gvcfs,
      )
      # We expect our gvcfs to occur at the 10 position and that 12 and 13 have
      # been merged into a 2 bp block, if enabled. Otherwise should be empty.
      if include_gvcfs:
          self.assertLen(gvcfs, 4)
          # Expected diploid genotype likelihoods when there's no coverage. The
          # chance of having each genotype is 1/3, in log10 space.
          flat_gls = np.log10([1.0 / 3] * 3)
          self.assertGVCF(
              gvcfs[0],
              ref="A",
              start=10,
              end=11,
              gq=1,
              min_dp=0,
              gls=flat_gls,
          )
          self.assertGVCF(
              gvcfs[1],
              ref="G",
              start=11,
              end=12,
              gq=0,
              min_dp=20,
              gls=np.array(
                  [-14.0230482368, -7.993606e-15, -14.0230482368]
              ),
              # The genotype should NOT be called here ("./.") as the likelihood
              # for het is greater than hom_ref.
              gts=[-1, -1],
          )
          self.assertGVCF(
              gvcfs[2],
              ref="G",
              start=12,
              end=14,
              gq=1,
              min_dp=0,
              gls=flat_gls,
          )
      else:
          self.assertEmpty(gvcfs)
  
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 11 for calling the VariantCallerTests obj's underlying member method code with example usage: obj.test_gvcfs_counts(include_gvcfs) without return types