code: def fit(self, X, y):
      return self
  
file_path: auto_ml/auto_ml/utils_ensembling.py
imports: import os
  import numpy
  import pandas
  import pathos
  from sklearn.base import BaseEstimator, TransformerMixin
label_desc: Use image node_id 3 for calling the Ensembler obj's underlying member method code with example usage: obj.fit(X, y) and returns: self