class_docstr: Parameter scheduler decorator used in conjunction with layer decay
  to reduce the learning rate of some specific parameter groups
code: def _to_param_scheduler(wrapped):
      return (
          wrapped
          if isinstance(wrapped, ClassyParamScheduler)
          else ConstantParamScheduler(wrapped)
      )
  
file_path: vissl/vissl/optimizers/param_scheduler/layer_decay_scheduler.py
imports: from typing import Any, Dict, Union
  from classy_vision.optim.param_scheduler import ClassyParamScheduler, ConstantParamScheduler, UpdateInterval
label_desc: Use image node_id 2 for calling the LayerDecayScheduler obj's underlying member method code with example usage: obj._to_param_scheduler(wrapped) and returns: unknown