code: def genomics_core_testdata(filename):
      """Gets the path to a testdata named filename in util/testdata.
  
      Args:
        filename: The name of a testdata file in the core genomics testdata
          directory. For example, if you have a test file in
          "third_party/nucleus/util/testdata/foo.txt", filename should be
          "foo.txt" to get a path to it.
  
      Returns:
        The absolute path to a testdata file.
      """
      return genomics_testdata(
          os.path.join(RELATIVE_TESTDATA_PATH, filename)
      )
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  from absl import flags
  from absl.testing import absltest
  from etils import epath
  import six
  from third_party.nucleus.protos import position_pb2
  from third_party.nucleus.protos import reads_pb2
  from third_party.nucleus.protos import struct_pb2
  from third_party.nucleus.protos import variants_pb2
  from third_party.nucleus.util import cigar
label_desc: Use image node_id 2 for calling a global function with example usage: genomics_core_testdata(filename) and returns: genomics_testdata