code: def config_path(cls):
      return "configs/models/mmf_bert/defaults.yaml"
  
imports: import torch
  from mmf.common.registry import registry
  from mmf.models.pythia import Pythia
  from mmf.modules.embeddings import ProjectionEmbedding
  from mmf.utils.transform import transform_to_batch_sequence
  from torch import nn
label_desc: Use image node_id 2 for calling the MMFBert obj's underlying member method code with example usage: obj.config_path(cls) and returns: str