code: def mbart_base_wmt20_architecture(args):
      args.layernorm_embedding = getattr(
          args, "layernorm_embedding", False
      )
      mbart_base_architecture(args)
  
imports: import logging
  from typing import Optional
  import torch
  import torch.nn
  from fairseq import utils
  from fairseq.models import register_model, register_model_architecture
  from fairseq.models.transformer import TransformerModel
  from fairseq.models.bart import BARTHubInterface, BARTModel
  from .ls_transformer import LSTransformerModel
label_desc: Use image node_id 5 for calling a global function with example usage: mbart_base_wmt20_architecture(args) without return types