code: def setUp(self):
      self.registry = torch.onnx.OnnxRegistry()
      # TODO: remove this once we have a better way to do this
      logger = logging.getLogger("TestDispatcher")
      self.diagnostic_context = diagnostics.DiagnosticContext(
          "torch.onnx.dynamo_export", torch.__version__
      )
      self.dispatcher = onnxfunction_dispatcher.OnnxFunctionDispatcher(
          self.registry, self.diagnostic_context
      )
  
imports: from __future__ import annotations
  import logging
  import operator
  from typing import TypeVar, Union
  import onnxscript
  import torch
  import torch.fx
  from onnxscript import BFLOAT16, DOUBLE, FLOAT, FLOAT16
  from onnxscript.function_libs.torch_lib import ops
  from onnxscript.onnx_opset import opset15
  from torch.onnx._internal.diagnostics import infra
  from torch.onnx._internal.fx import analysis, diagnostics, onnxfunction_dispatcher, registration
  from torch.testing._internal import common_utils
label_desc: Use image node_id 1 for calling the TestDispatcher obj's underlying member method code with example usage: obj.setUp() without return types