code: def register_param_scheduler(name, bypass_checks=False):
      """Registers a :class:`ParamScheduler` subclass.
  
      This decorator allows Classy Vision to instantiate a subclass of
      ParamScheduler from a configuration file, even if the class itself is not
      part of the Classy Vision framework. To use it, apply this decorator to a
      ParamScheduler subclass that implements a `from_config` classmethod, like
      this:
  
      .. code-block:: python
  
          @register_param_scheduler('my_scheduler')
          class MyParamScheduler(ParamScheduler):
              ...
  
      To instantiate a param scheduler from a configuration file, see
      :func:`build_param_scheduler`."""
  
      def register_param_scheduler_cls(cls):
          if not bypass_checks:
              if name in PARAM_SCHEDULER_REGISTRY:
                  msg = "Cannot register duplicate param scheduler ({}). Already registered at \n{}\n"
                  raise ValueError(
                      msg.format(
                          name, PARAM_SCHEDULER_REGISTRY_TB[name]
                      )
                  )
              if not issubclass(cls, ParamScheduler):
                  raise ValueError(
                      "Param Scheduler ({}: {}) must extend ParamScheduler".format(
                          name, cls.__name__
                      )
                  )
          tb = "".join(traceback.format_stack())
          PARAM_SCHEDULER_REGISTRY[name] = cls
          PARAM_SCHEDULER_REGISTRY_TB[name] = tb
          return cls
  
      return register_param_scheduler_cls
  
file_path: ClassyVision/classy_vision/optim/param_scheduler/__init__.py
imports: import traceback
  from pathlib import Path
  from typing import Any, Dict
  from classy_vision.generic.registry_utils import import_all_modules
  from fvcore.common.param_scheduler import ParamScheduler
  from .classy_vision_param_scheduler import ClassyParamScheduler, UpdateInterval
  from .composite_scheduler import CompositeParamScheduler, IntervalScaling
  from .fvcore_schedulers import ConstantParamScheduler, CosineParamScheduler, LinearParamScheduler, MultiStepParamScheduler, PolynomialDecayParamScheduler, StepParamScheduler, StepWithFixedGammaParamScheduler
label_desc: Use image node_id 2 for calling a global function with example usage: register_param_scheduler(name, bypass_checks) and returns: register_param_scheduler_cls, cls