class_docstr: Track side effects (list mutation, setattr, etc) that need to be
  applied after an FX graph is run.
class_docstr_tok: ["Track","side","effects","(","list","mutation",",","setattr",",","etc",")","that","need","to","be","applied","after","an","FX","graph","is","run","."]
code: def clear(self):
      self.keepalive.clear()
      self.id_to_variable.clear()
  
imports: import inspect
  from typing import Any, Dict, List, Optional, Union
  import torch.nn
  from .None import utils, variables
  from .bytecode_transformation import create_call_function, create_call_method, create_instruction
  from .codegen import PyCodegen
  from .exc import unimplemented
  from .source import LocalSource, Source
  from .utils import nn_module_new, object_new
  from .variables.base import is_side_effect_safe, MutableLocalBase, MutableLocalSource, VariableTracker
label_desc: Use image node_id 35 for calling the SideEffects obj's underlying member method code with example usage: obj.clear() without return types