main.swift

MultiThreadedEventLoopGroup.withCurrentThreadAsEventLoop { el in
    let fut = el.scheduleTask(in: .seconds(1), {() throws -> Bool in print("Foo");return true;})

    fut.futureResult.whenComplete { (result: Result<Bool, Error>) -> Void in
        el.shutdownGracefully { error in
            print(error)
        }
    }
}