code: def original_layer_class():
      return GPT2Block
  
file_path: parallelformers/parallelformers/policies/gpt2.py
imports: from transformers.models.gpt2.modeling_gpt2 import GPT2Block
  from parallelformers.policies.base import Policy
  from parallelformers.policies.base.policy import Layer
  from parallelformers.utils import AllReduceConv1D
label_desc: Use image node_id 6 for calling the GPT2Policy obj's underlying member method code with example usage: obj.original_layer_class() and returns: GPT2Block