code: def build(self):
      self._build_word_embedding()
      self._init_feature_encoders("image")
      self._init_feature_embeddings("image")
      self._init_classifier()
      self._init_extras()
  
file_path: mmf/mmf/models/butd.py
imports: import torch
  from mmf.common.registry import registry
  from mmf.models.pythia import Pythia
  from mmf.modules.layers import ClassifierLayer
label_desc: Use image node_id 3 for calling the BUTD obj's underlying member method code with example usage: obj.build() without return types