有没有办法在C#中通过异步方法使用Google Calendar API？

using Google.Apis.Auth.OAuth2;
using Google.Apis.Calendar.v3;
using Google.Apis.Calendar.v3.Data;
using Google.Apis.Services;
using System;
using System.Collections.Generic;
using System.Threading.Tasks;

public class GoogleCalendarService
{
    private readonly CalendarService _calendarService;

    public GoogleCalendarService(string clientId, string clientSecret, string refreshToken)
    {
        var credential = new UserCredential(new GoogleAuthorizationCodeFlow(
            new GoogleAuthorizationCodeFlow.Initializer
            {
                ClientSecrets = new ClientSecrets
                {
                    ClientId = clientId,
                    ClientSecret = clientSecret
                }
            }),
            "user",
            new TokenResponse { RefreshToken = refreshToken });

        _calendarService = new CalendarService(new BaseClientService.Initializer
        {
            HttpClientInitializer = credential
        });
    }

    public async Task<IList<CalendarListEntry>> GetCalendarListAsync()
    {
        var calendarListRequest = _calendarService.CalendarList.List();
        calendarListRequest.MaxResults = 10; // 最多返回10个日历
        return await calendarListRequest.ExecuteAsync().ConfigureAwait(false);
    }
}

public class Program
{
    public static async Task Main(string[] args)
    {
        var googleCalendarService = new GoogleCalendarService("YourClientId", "YourClientSecret", "YourRefreshToken");
        var calendarList = await googleCalendarService.GetCalendarListAsync();

        foreach (var calendar in calendarList.Items)
        {
            Console.WriteLine(calendar.Summary);
        }
    }
}