docstr: No shared params in GPT2ForQuestionAnswering.
code: def get_shared_params(self) -> List[Dict[int, Tensor]]:
      """No shared params in GPT2ForQuestionAnswering."""
      return []
  
imports: import warnings
  from functools import partial
  from typing import Callable, Dict, List
  from torch import Tensor, nn
  import colossalai.shardformer.layer
  from ..modeling.gptj import GPTJPipelineForwards, get_gptj_flash_attention_forward
  from .base_policy import ModulePolicyDescription, Policy, SubModuleReplacementDescription
label_desc: Use image node_id 4 for calling the GPTJForQuestionAnsweringPolicy obj's underlying member method code with example usage: obj.get_shared_params() and returns: list