code: def get_input(self, x: Any) -> Any:
      return x
  
imports: import logging
  import math
  import re
  from abc import abstractmethod
  from contextlib import contextmanager
  from typing import Any, Dict, List, Optional, Tuple, Union
  import pytorch_lightning
  import torch
  import torch.nn
  from einops import rearrange
  from packaging import version
  from ..modules.autoencoding.regularizers import AbstractRegularizer
  from ..modules.ema import LitEma
  from ..util import default, get_nested_attribute, get_obj_from_str, instantiate_from_config
label_desc: Use image node_id 2 for calling the IdentityFirstStage obj's underlying member method code with example usage: obj.get_input(x) and returns: x