code: def register_model(name, bypass_checks=False):
      """Registers a :class:`ClassyModel` subclass.
  
      This decorator allows Classy Vision to instantiate a subclass of
      :class:`ClassyModel` 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 ClassyModel subclass, like this:
  
      .. code-block:: python
  
        @register_model('resnet')
        class ResidualNet(ClassyModel):
           ...
  
      To instantiate a model from a configuration file, see
      :func:`build_model`."""
  
      def register_model_cls(cls):
          if not bypass_checks:
              if name in MODEL_REGISTRY:
                  msg = "Cannot register duplicate model ({}). Already registered at \n{}\n"
                  raise ValueError(
                      msg.format(name, MODEL_REGISTRY_TB[name])
                  )
              if not issubclass(cls, ClassyModel):
                  raise ValueError(
                      "Model ({}: {}) must extend ClassyModel".format(
                          name, cls.__name__
                      )
                  )
              if cls.__name__ in MODEL_CLASS_NAMES:
                  msg = (
                      "Cannot register model with duplicate class name({})."
                      + "Previously registered at \n{}\n"
                  )
                  raise ValueError(
                      msg.format(
                          cls.__name__,
                          MODEL_CLASS_NAMES_TB[cls.__name__],
                      )
                  )
          tb = "".join(traceback.format_stack())
          MODEL_REGISTRY[name] = cls
          MODEL_CLASS_NAMES.add(cls.__name__)
          MODEL_REGISTRY_TB[name] = tb
          MODEL_CLASS_NAMES_TB[cls.__name__] = tb
          return cls
  
      return register_model_cls
  
imports: import copy
  import traceback
  from collections import defaultdict
  from pathlib import Path
  from classy_vision.generic.registry_utils import import_all_modules
  from classy_vision.heads import build_head
  from .classy_model import ClassyModel
  from .anynet import AnyNet
  from .classy_block import ClassyBlock
  from .classy_model import ClassyModelWrapper, ClassyModelHeadExecutorWrapper
  from .densenet import DenseNet
  from .efficientnet import EfficientNet
  from .lecun_normal_init import lecun_normal_init
  from .mlp import MLP
  from .regnet import RegNet
  from .resnet import ResNet
  from .resnext import ResNeXt
  from .resnext3d import ResNeXt3D
  from .squeeze_and_excitation_layer import SqueezeAndExcitationLayer
  from .vision_transformer import VisionTransformer
label_desc: Use image node_id 1 for calling a global function with example usage: register_model(name, bypass_checks) and returns: register_model_cls, cls