class_docstr: Raised when trying to use a subclass which was not registered
code: def __init__(self, registrable_cls, name=None, registered_cls=None):
      if name is not None:
          msg = "'%s' has not been registered for type %s. " % (
              name,
              registrable_cls,
          )
      else:
          msg = "subclass %s has not been registered for type %s. " % (
              registered_cls,
              registrable_cls,
          )
      msg += "Use @BaseClass.register('my_component') to register a subclass"
      super(NotRegisteredError, self).__init__(msg)
  
imports: from snips_nlu.__about__ import __model_version__
label_desc: Use image node_id 1 to create a new NotRegisteredError object from inherited base classes: SnipsNLUError with example: obj = NotRegisteredError(registrable_cls, name, registered_cls)