How to use the lambdarest.__init__.ScopeMissing function in lambdarest

# jsonschema.validate using given schema
                        validate(json_data, schema, **__validate_kwargs)

                try:
                    provided_scopes = json.loads(
                        event["requestContext"]["authorizer"]["scopes"]
                    )
                except KeyError:
                    provided_scopes = []
                except json.decoder.JSONDecodeError:
                    # Ignore passed scopes if it isn't properly json encoded
                    provided_scopes = []

                for scope in scopes or []:
                    if scope not in provided_scopes:
                        raise ScopeMissing("Scope: '{}' is missing".format(scope))

                return func(event, *args, **kwargs)

response = Response(body, status_code, headers, multiValueHeaders)
                return response.to_json(
                    encoder=json_encoder,
                    application_load_balancer=application_load_balancer,
                )

            except ValidationError as error:
                error_description = "Schema[{}] with value {}".format(
                    "][".join(str(error.absolute_schema_path)), error.message
                )
                logging.warning(
                    logging_message.format(status_code=400, message=error_description)
                )
                error_tuple = ("Validation Error", 400)

            except ScopeMissing as error:
                error_description = "Permission denied"
                logging.warning(
                    logging_message.format(status_code=403, message=error_description)
                )
                error_tuple = (error_description, 403)

            except Exception as error:
                if error_handler:
                    error_handler(error, method_name)
                else:
                    raise

        body, status_code = error_tuple
        return Response(body, status_code).to_json(
            application_load_balancer=application_load_balancer
        )