code: def __init__(self, config):
      super().__init__()
      self.config = config
      self.layer = nn.ModuleList(
          [ViTLayer(config) for _ in range(config.num_hidden_layers)]
      )
  
imports: from collections import namedtuple
  from dataclasses import asdict, dataclass
  import torch
  from mmf.utils.general import retry_n
  from omegaconf import OmegaConf
  from packaging import version
  from torch import nn
label_desc: Use image node_id 1 to create a new ViTEncoder object from inherited base classes: nn with example: obj = ViTEncoder(config)