code: def on_epoch_begin(self, epoch, logs={}):
      self.epoch += 1
  
file_path: autoencoder-gelu/utils/callbacks.py
imports: from keras.callbacks import Callback, LearningRateScheduler
  import numpy
  import matplotlib.pyplot
  import os
label_desc: Use image node_id 3 for calling the CustomCallback obj's underlying member method code with example usage: obj.on_epoch_begin(epoch, logs) without return types