code: def __init__(self):
      for subclass in ImageUtilsBackend.__subclasses__():
          ImageUtilsBackend._subclasses[subclass.__name__] = subclass
      self.next = {}
      self._default_backend = None
  
file_path: nnabla/python/src/nnabla/utils/image_utils/backend_events/image_utils_backend.py
imports: from collections import OrderedDict
label_desc: Use image node_id 1 to create a new ImageUtilsBackend object from inherited base classes: object with example: obj = ImageUtilsBackend()