code: def __len__(self):
      return self._n_splits
  
file_path: AIX360/aix360/algorithms/nncontrastive/utils.py
imports: import math
  import numpy
  from tensorflow.keras.utils import Sequence
  from sklearn.model_selection import StratifiedShuffleSplit
label_desc: Use image node_id 3 for calling the JointAESampler obj's underlying member method code with example usage: obj.__len__() and returns: self