code: def get_optimizer(self):
      pass
  
imports: from abc import ABC, abstractmethod
  from bigdl.dllib.utils.common import DOUBLEMAX
  from bigdl.orca.learn.optimizers.schedule import Scheduler
  from bigdl.dllib.utils.log4Error import invalidInputError
  from typing import Any, Optional, Dict, TYPE_CHECKING
label_desc: Use image node_id 1 for calling the Optimizer obj's underlying member method code with example usage: obj.get_optimizer() without return types