code: def build_training_data_loader(self):
      x_train = np.ones((64, 8, 8))
      y_train = np.ones((64, 8, 8))
      return (x_train, y_train)
  
imports: import random
  import numpy
  import tensorflow
  from packaging import version
  from determined.keras import TFKerasTrial, TFKerasTrialContext
label_desc: Use image node_id 3 for calling the NoopKerasTrial obj's underlying member method code with example usage: obj.build_training_data_loader() and returns: x_train,  y_train