code: def original_layer_class():
      return BertLayer
  
file_path: parallelformers/parallelformers/policies/bert.py
imports: from transformers.models.bert.modeling_bert import BertLayer
  from parallelformers.policies.base import Layer, Policy
  from parallelformers.transformers.modeling_bert import BertEmbeddings_
  from parallelformers.utils import AllReduceLinear
label_desc: Use image node_id 7 for calling the BertPolicy obj's underlying member method code with example usage: obj.original_layer_class() and returns: BertLayer