如何在Unity3D中访问谷歌日历事件？

using Google.Apis.Auth.OAuth2;
using Google.Apis.Calendar.v3;
using Google.Apis.Calendar.v3.Data;
using Google.Apis.Services;
using Google.Apis.Util.Store;
using System;
using System.Collections.Generic;
using System.IO;
using System.Threading;

public class GoogleCalendarManager
{
    private static string[] Scopes = { CalendarService.Scope.CalendarReadonly };
    private static string ApplicationName = "Unity Google Calendar Integration";
    private static string CredentialsFilePath = "path/to/credentials.json";

    private CalendarService service;

    public GoogleCalendarManager()
    {
        UserCredential credential;

        using (var stream = new FileStream(CredentialsFilePath, FileMode.Open, FileAccess.Read))
        {
            string credPath = "token.json";
            credential = GoogleWebAuthorizationBroker.AuthorizeAsync(
                GoogleClientSecrets.Load(stream).Secrets,
                Scopes,
                "user",
                CancellationToken.None,
                new FileDataStore(credPath, true)).Result;
        }

        service = new CalendarService(new BaseClientService.Initializer()
        {
            HttpClientInitializer = credential,
            ApplicationName = ApplicationName,
        });
    }

    public List<Event> GetEvents()
    {
        EventsResource.ListRequest request = service.Events.List("primary");
        request.TimeMin = DateTime.Now;
        request.ShowDeleted = false;
        request.SingleEvents = true;
        request.MaxResults = 10;
        request.OrderBy = EventsResource.ListRequest.OrderByEnum.StartTime;

        Events events = request.Execute();
        return events.Items.ToList();
    }
}