@inject(MessageService) messageService: MessageService;
    async doSomething() {
        // get progress object
        const progress = await this.messageService.showProgress({
            text: "Doing something"
        });
        // report progress before next unit of work
        progress.report({
            message: "Doing task 1...",
            work: {
                done: 0,
                total: 2
            }
        });
        // wait for task 1 to complete
        await this.task1();
        progress.report({
            message: "Doing task 2...",
            work: {
                done: 1,
                total: 2
            }
        });
        // wait for task 2 to complete
        await this.task2();
        // stop showing the progress
        progress.cancel();
    }
    async task1() {}
    async task2() {}