code: def state_dict(self) -> Dict:
      return {
          "block_size": self._block_size,
      }
  
imports: import os
  from abc import ABC, abstractmethod
  from time import sleep
  from typing import Any, Dict, List, Optional, Tuple
  import numpy
  import torch
  from lightning.data.streaming.constants import _TORCH_DTYPES_MAPPING, _TORCH_GREATER_EQUAL_2_1_0
  from lightning.data.streaming.serializers import Serializer
label_desc: Use image node_id 2 for calling the TokensLoader obj's underlying member method code with example usage: obj.state_dict() and returns: dict