code: def test_subgraph_rewriter_correct_output_replacement(self):
      class M(torch.nn.Module):
          def forward(self, x, y):
              val = torch.neg(y) + torch.relu(x)
              return torch.add(val, val)
  
      def pattern(x):
          return torch.relu(x)
  
      def replacement(x):
          return torch.neg(x)
  
      def comparison(x, y):
          val = torch.neg(y) + torch.neg(x)
          return torch.add(val, val)
  
      traced = symbolic_trace(M())
      comparison_fn = symbolic_trace(comparison)
  
      x = torch.randn(4, 4)
      y = torch.randn(4, 4)
  
      subgraph_rewriter.replace_pattern(traced, pattern, replacement)
  
      traced.graph.lint()
  
      ref_outs = comparison_fn(x, y)
      test_outs = traced.forward(x, y)
      self.assertEqual(ref_outs, test_outs)
  
imports: import os
  import sys
  import torch
  from torch.fx import symbolic_trace, subgraph_rewriter
  from torch.fx.annotate import annotate
  from torch.fx.experimental.rewriter import RewritingTracer
  from torch.testing._internal.jit_utils import JitTestCase
label_desc: Use image node_id 7 for calling the TestSubgraphRewriter obj's underlying member method code with example usage: obj.test_subgraph_rewriter_correct_output_replacement() and returns: torch, torch, torch, torch