code: def asdict(self):
      return {k: v for k, v in asdict(self).items() if v is not None}
  
imports: from abc import ABC, abstractmethod
  from dataclasses import asdict, dataclass, field, fields
  from typing import Any, Callable, Dict, List, Optional, Union
  import numpy
  import reagent.core.types
  import torch
  import torch.nn.functional
label_desc: Use image node_id 1 for calling the Transition obj's underlying member method code with example usage: obj.asdict() and returns: unknown