code: def fit(self, dataset):
      for preprocessor in self.__data_preprocessors:
          dataset = preprocessor.fit(dataset)
      return dataset
  
imports: import copy
  import torch
  import typing
  import autogl.data.graph
label_desc: Use image node_id 2 for calling the _ComposedDataPreprocessor obj's underlying member method code with example usage: obj.fit(dataset) and returns: dataset