code: def test_does_not_merge_unrelated(self):
      # o  o
      def fn(w, x, y, z):
          a = x * y
          b = w * z
          return a, b
  
      graph = self._perform_ad_subgraph_slicing(fn, 1, 1, 1, 1)
  
      self.assertGraphSize(graph, 3)
      self.assertGraphContainsExactly(
          graph, "prim::DifferentiableGraph", 2
      )
  
imports: import os
  import sys
  import unittest
  from torch.testing._internal.common_utils import GRAPH_EXECUTOR, ProfilingMode, num_profiled_runs, enable_profiling_mode_for_profiling_tests
  from torch.testing._internal.common_jit import check_against_reference
  import torch
  from torch.testing._internal.jit_utils import JitTestCase, disable_autodiff_subgraph_inlining
  from torch.testing import FileCheck
  from typing import List, Tuple, Optional
label_desc: Use image node_id 13 for calling the TestAutodiffSubgraphSlicing obj's underlying member method code with example usage: obj.test_does_not_merge_unrelated() and returns: a,  b