code: def test_trace_fn(self):
      trace_fn = torch.jit.trace(fn, [torch.zeros(10), torch.zeros(10)])
      self._common(lambda a, b: trace_fn(a, b) + 1)
  
file_path: pytorch/test/dynamo/test_interop.py
imports: import torch
  import torch._dynamo.test_case
  import torch._dynamo.testing
  import torch.onnx.operators
  from torch._dynamo.testing import same
label_desc: Use image node_id 4 for calling the InteropTests obj's underlying member method code with example usage: obj.test_trace_fn() without return types