如何在xamarin表单中使用Refit Settings？

// 1. 定义API接口
public interface IApiService
{
    [Get("/api/users/{id}")]
    Task<User> GetUserById(int id);
}

// 2. 创建页面或者视图模型
public class MainPageViewModel : INotifyPropertyChanged
{
    private readonly IApiService _apiService;

    public MainPageViewModel()
    {
        _apiService = RestService.For<IApiService>("https://api.example.com");
    }

    public async Task GetUser()
    {
        // 4. 创建Refit的RestService实例，并传递Settings对象
        var settings = new RefitSettings
        {
            Timeout = TimeSpan.FromSeconds(10),
            JsonSerializerSettings = new JsonSerializerSettings
            {
                ContractResolver = new CamelCasePropertyNamesContractResolver()
            }
        };

        var user = await _apiService.GetUserById(1).ConfigureAwait(false);

        // 处理响应
        // ...
    }
}

// 5. 创建Refit的Settings对象，并设置相应的属性
var settings = new RefitSettings
{
    Timeout = TimeSpan.FromSeconds(10),
    JsonSerializerSettings = new JsonSerializerSettings
    {
        ContractResolver = new CamelCasePropertyNamesContractResolver()
    }
};

// 6. 使用Refit的RestService实例调用接口方法
var user = await _apiService.GetUserById(1).ConfigureAwait(false);