code: def train(self, task: ClassyTask):
      """Runs training phases, phases are generated from the config.
  
      Args:
          task: Task to be used in training. It should contain
              everything that is needed for training
      """
  
      task.prepare()
      assert isinstance(task, ClassyTask)
  
      # make sure all the workers start training at the same time
      # this helps catch hangs which would have happened elsewhere
      barrier()
  
      task.on_start()
      while not task.done_training():
          task.on_phase_start()
          while True:
              try:
                  task.step()
              except StopIteration:
                  break
          task.on_phase_end()
      task.on_end()
  
label_desc: Use image node_id 1 for calling the ClassyTrainer obj's underlying member method code with example usage: obj.train(task) without return types