class_docstr: The identity transformation. Does nothing.
class_docstr_tok: ["The","identity","transformation",".","Does","nothing","."]
code: def train(self, time_series: TimeSeries):
      pass
  
imports: from abc import abstractmethod
  from copy import deepcopy
  from enum import Enum
  import inspect
  import logging
  from merlion.utils import TimeSeries
  from merlion.utils.misc import AutodocABCMeta
label_desc: Use image node_id 4 for calling the Identity obj's underlying member method code with example usage: obj.train(time_series) without return types