code: def test_graph_break_inlining_grad(self):
      def gn(z):
          with torch.no_grad():
              torch._dynamo.graph_break()
              return torch.sin(z)
  
      def fn(x, y, z):
          a = torch.mm(x, y)
          z = gn(z)
          return a
  
      torch._dynamo.reset()
      cnts = torch._dynamo.testing.CompileCounter()
      opt_fn = torch._dynamo.optimize(cnts, nopython=False)(fn)
      x = torch.randn(4, 4, requires_grad=True)
      y = torch.randn(4, 4, requires_grad=True)
      z = torch.randn(4)
      opt_fn(x, y, z).sum().backward()
  
      self.assertEqual(cnts.frame_count, 2)
  
imports: import unittest
  import torch
  import torch._dynamo.test_case
  import torch._dynamo.testing
  import torch.onnx.operators
  from torch._dynamo.testing import EagerAndRecordGraphs, normalize_gm, same
  from torch.nn import functional
  from torch.testing._internal.common_cuda import PLATFORM_SUPPORTS_FLASH_ATTENTION
  from torch.testing._internal.common_utils import TEST_WITH_ROCM
label_desc: Use image node_id 29 for calling the CtxManagerTests obj's underlying member method code with example usage: obj.test_graph_break_inlining_grad() and returns: a, torch