code: def init_weights(self):
      if hasattr(self.layers, "pre_logits"):
          lecun_normal_init(
              self.layers.pre_logits.weight,
              fan_in=self.layers.pre_logits.in_features,
          )
          nn.init.zeros_(self.layers.pre_logits.bias)
      if hasattr(self.layers, "head"):
          nn.init.zeros_(self.layers.head.weight)
          nn.init.zeros_(self.layers.head.bias)
  
file_path: ClassyVision/classy_vision/heads/vision_transformer_head.py
imports: import copy
  from collections import OrderedDict
  from typing import Optional
  import torch.nn
  from classy_vision.heads import ClassyHead, register_head
  from ..models.lecun_normal_init import lecun_normal_init
label_desc: Use image node_id 2 for calling the VisionTransformerHead obj's underlying member method code with example usage: obj.init_weights() without return types