code: def new_model_class(self):
      return None
  
imports: import warnings
  from typing import Callable, Dict, List, Union
  import torch.nn
  import colossalai.shardformer.layer
  from colossalai.shardformer.layer import DropoutForReplicatedInput, Linear1D_Col
  from ..modeling.jit import get_jit_fused_dropout_add_func
  from ..modeling.vit import ViTForImageClassification_pipeline_forward, ViTForMaskedImageModeling_pipeline_forward, ViTModel_pipeline_forward, get_jit_fused_vit_output_forward, get_vit_flash_self_attention_forward
  from .base_policy import ModulePolicyDescription, Policy, SubModuleReplacementDescription
label_desc: Use image node_id 4 for calling the ViTPolicy obj's underlying member method code with example usage: obj.new_model_class() and returns: None