class_docstr: Shard the original huggingface model according to the policy
  
  Args:
      policy (:class:`Policy`): The policy to shard the model
      model (:class:`torch.Module`): The model to shard
      shard_config: The setting of distributed model
code: def _postprocess(self) -> None:
      self.model = self.policy.postprocess()
  
imports: from types import MethodType
  from typing import Any, Callable, Dict, List, Optional, Set, Union
  import torch.nn
  from torch import Tensor
  from colossalai.lazy import LazyInitContext
  from .._utils import getattr_, setattr_
  from ..policies.auto_policy import get_autopolicy
  from ..policies.base_policy import Policy, SubModuleReplacementDescription
  from .shard_config import ShardConfig
  from .utils import set_tensors_to_none
label_desc: Use image node_id 4 for calling the ModelSharder obj's underlying member method code with example usage: obj._postprocess() without return types