code: def register_blueprint(self, *args, **kwargs):
          
  
          if self.debug:
              warnings.simplefilter("default")
          warnings.warn(
              "Use of register_blueprint will be deprecated in "
              "version 1.0.  Please use the blueprint method"
              " instead",
              DeprecationWarning,
          )
          return self.blueprint(*args, **kwargs)
docs: Proxy method provided for invoking the :func:`blueprint` method
  
          .. note::
              To be deprecated in 1.0. Use :func:`blueprint` instead.
  
          :param args: Blueprint object or (list, tuple) thereof
          :param kwargs: option dictionary with blueprint defaults
          :return: None