docstr: Helper method which tries to insert a module that was not declared as submodule.
docstr_tok: ["Helper","method","which","tries","to","insert","a","module","that","was","not","declared","as","submodule","."]
code: def _insert_module_as_submodule(self, mod: torch.nn.Module) -> str:
      """
      Helper method which tries to insert a module that was not declared as submodule.
      """
      idx = 0
      mod_name = mod.__class__.__name__.lower()
      path = f"{mod_name}_{idx}"
      while hasattr(self.root, path):
          path = f"{mod_name}_{idx}"
          idx += 1
  
      self.root.add_module(path, mod)
      return path
  
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 4 for calling the MetaTracer obj's underlying member method code with example usage: obj._insert_module_as_submodule(mod) and returns: path