Register a blueprint on the application.

        :param blueprint: Blueprint object or (list, tuple) thereof
        :param options: option dictionary with blueprint defaults
        :return: Nothing

def blueprint(self, blueprint, **options):
        """Register a blueprint on the application.

        :param blueprint: Blueprint object or (list, tuple) thereof
        :param options: option dictionary with blueprint defaults
        :return: Nothing
        """
        if isinstance(blueprint, (list, tuple, BlueprintGroup)):
            for item in blueprint:
                self.blueprint(item, **options)
            return
        if blueprint.name in self.blueprints:
            assert self.blueprints[blueprint.name] is blueprint, (
                'A blueprint with the name "%s" is already registered.  '
                "Blueprint names must be unique." % (blueprint.name,)
            )
        else:
            self.blueprints[blueprint.name] = blueprint
            self._blueprint_order.append(blueprint)
        blueprint.register(self, options)