code: def setUp(self):
      super().setUp()
  
      class DummyModule(torch.nn.Module):
          def forward(self, x):
              return x * 2
  
      self._gm = torch.fx.symbolic_trace(DummyModule())
      self._graph = GraphLowering(self._gm)
  
      self._stack = contextlib.ExitStack()
      self._stack.enter_context(V.set_graph_handler(self._graph))
  
file_path: pytorch/test/inductor/test_codegen_triton.py
imports: import contextlib
  import sympy
  import torch
  import torch._inductor.config
  from torch._inductor.codegen import triton_utils
  from torch._inductor.codegen.common import SizeArg
  from torch._inductor.graph import GraphLowering
  from torch._inductor.virtualized import V
  from torch.testing._internal.common_utils import TestCase
  from torch.testing._internal.inductor_utils import HAS_CPU, HAS_CUDA
label_desc: Use image node_id 1 for calling the TestCodegenTriton obj's underlying member method code with example usage: obj.setUp() and returns: unknown