docstr: Make sure we are keeping the common human contigs.
docstr_tok: ["Make","sure","we","are","keeping","the","common","human","contigs","."]
code: def test_excluded_contigs_doesnt_drop_standard_contigs(self):
      """Make sure we are keeping the common human contigs."""
      for chrom in range(1, 22):
          for prefix in ["", "chr", "Chr"]:
              self.assertNotIn(
                  "{}{}".format(prefix, chrom),
                  exclude_contigs.EXCLUDED_HUMAN_CONTIGS,
              )
      self.assertNotIn("chrX", exclude_contigs.EXCLUDED_HUMAN_CONTIGS)
      self.assertNotIn("chrY", exclude_contigs.EXCLUDED_HUMAN_CONTIGS)
  
imports: from absl.testing import absltest
  from deepvariant import exclude_contigs
label_desc: Use image node_id 1 for calling the ExcludeContigsTests obj's underlying member method code with example usage: obj.test_excluded_contigs_doesnt_drop_standard_contigs() without return types