class_docstr: Container holding a list of callbacks.
code: def on_batch_end(self, batch, logs=None):
      logs = logs or {}
      for callback in self.callbacks:
          callback.on_batch_end(batch, logs)
  
file_path: pywick/pywick/callbacks/CallbackContainer.py
imports: import time
  import datetime
label_desc: Use image node_id 8 for calling the CallbackContainer obj's underlying member method code with example usage: obj.on_batch_end(batch, logs) without return types