code: def end(self):
      time_use = time.time() - self._start
      self._esti_time = (self._esti_time + time_use) / 2
  
imports: import time
  import numpy
  import torch
  import typing
  from sklearn import preprocessing
  from sklearn.metrics.pairwise import cosine_similarity
  import tqdm
  import tabulate
  import autogl.data.graph
  from ._base_feature_engineer import BaseFeatureEngineer
  from ._feature_engineer_registry import FeatureEngineerUniversalRegistry
  from ._selectors import GBDTFeatureSelector
  from ...utils import get_logger
label_desc: Use image node_id 3 for calling the Timer obj's underlying member method code with example usage: obj.end() without return types