class_docstr: Parameter scheduler decorator used in conjunction with layer decay
  to reduce the learning rate of some specific parameter groups
code: def from_config(cls, config: Dict[str, Any]) -> "LayerDecayScheduler":
      pass
  
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 3 for calling the LayerDecayScheduler obj's underlying member method code with example usage: obj.from_config(cls, config) without return types