code: def trace(
      self, root, meta_args: Dict[str, torch.Tensor], concrete_args=None
  ):
      assert isinstance(meta_args, dict)
      self.meta_args = meta_args
  
      self.patched_torch_methods = {
          target: gen_constructor_wrapper(getattr(torch, target))
          for target in self._TORCH_METHODS_TO_PATCH
      }
      self.orig_fns = set()
  
      for name, (wrapper, orig) in self.patched_torch_methods.items():
          setattr(torch, name, wrapper)
          self.orig_fns.add(orig)
  
      try:
          graph = super().trace(root, concrete_args)
          graph._tracer_extras = {"meta_args": meta_args}
          return graph
      finally:
          for name, (_, orig) in self.patched_torch_methods.items():
              setattr(torch, name, orig)
  
imports: import torch
  import torch.fx
  import warnings
  import functools
  import builtins
  from typing import Any, Callable, Dict, Optional, Union
label_desc: Use image node_id 7 for calling the MetaTracer obj's underlying member method code with example usage: obj.trace(root, meta_args, concrete_args) and returns: graph