code: def test_merge_list_right_bigger(self):
      a, b = [1], [2, 3]
      result = combiners._merge_list(a, b)
      self.assertEqual(result, [2, 3, 1])
      self.assertIs(result, b)
  
imports: import dataclasses
  import numpy
  from absl.testing import absltest
  from absl.testing import parameterized
  from unittest.mock import patch
  from typing import Tuple
  import pipeline_dp
  from analysis import per_partition_combiners
  from analysis import metrics
  from analysis.tests import common
label_desc: Use image node_id 2 for calling the UtilitiesTest obj's underlying member method code with example usage: obj.test_merge_list_right_bigger() without return types