How to use the angular-in-memory-web-api.createErrorResponse function in angular-in-memory-web-api

return new Observable((subscriber: Subscriber) => subscriber.error(
            new Response(createErrorResponse(
              interceptorArgs.requestInfo.req, 500, error
            )))
          );

return new Observable((subscriber: Subscriber) => subscriber.error(
        new Response(createErrorResponse(
          interceptorArgs.requestInfo.req, 404, 'Not found'
        )))
      );