code: def register_hook(name, bypass_checks=False):
      """Registers a :class:`ClassyHook` subclass.
  
      This decorator allows Classy Vision to instantiate a subclass of
      :class:`ClassyHook` from a configuration file, even if the class
      itself is not part of the base Classy Vision framework. To use it,
      apply this decorator to a ClassyHook subclass, like this:
  
      .. code-block:: python
  
        @register_hook('custom_hook')
        class CustomHook(ClassyHook):
           ...
  
      To instantiate a hook from a configuration file, see
      :func:`build_hook`.
      """
  
      def register_hook_cls(cls):
          if not bypass_checks:
              if name in HOOK_REGISTRY:
                  msg = "Cannot register duplicate hook ({}). Already registered at \n{}\n"
                  raise ValueError(
                      msg.format(name, HOOK_REGISTRY_TB[name])
                  )
              if not issubclass(cls, ClassyHook):
                  raise ValueError(
                      "Hook ({}: {}) must extend ClassyHook".format(
                          name, cls.__name__
                      )
                  )
              if cls.__name__ in HOOK_CLASS_NAMES:
                  msg = (
                      "Cannot register hook with duplicate class name({})."
                      + "Previously registered at \n{}\n"
                  )
                  raise ValueError(
                      msg.format(
                          cls.__name__,
                          HOOK_CLASS_NAMES_TB[cls.__name__],
                      )
                  )
          tb = "".join(traceback.format_stack())
          HOOK_REGISTRY[name] = cls
          HOOK_CLASS_NAMES.add(cls.__name__)
          HOOK_REGISTRY_TB[name] = tb
          HOOK_CLASS_NAMES_TB[cls.__name__] = tb
          return cls
  
      return register_hook_cls
  
imports: import copy
  import traceback
  from pathlib import Path
  from typing import Any, Dict, List
  from classy_vision.generic.registry_utils import import_all_modules
  from .constants import ClassyHookFunctions
  from .classy_hook import ClassyHook
  from .checkpoint_hook import CheckpointHook
  from .torchscript_hook import TorchscriptHook
  from .output_csv_hook import OutputCSVHook
  from .exponential_moving_average_model_hook import ExponentialMovingAverageModelHook
  from .loss_lr_meter_logging_hook import LossLrMeterLoggingHook
  from .model_complexity_hook import ModelComplexityHook
  from .model_tensorboard_hook import ModelTensorboardHook
  from .precise_batch_norm_hook import PreciseBatchNormHook
  from .profiler_hook import ProfilerHook
  from .progress_bar_hook import ProgressBarHook
  from .tensorboard_plot_hook import TensorboardPlotHook
  from .visdom_hook import VisdomHook
label_desc: Use image node_id 1 for calling a global function with example usage: register_hook(name, bypass_checks) and returns: register_hook_cls, cls