/// <summary>
/// 转换为微博访问令牌
/// </summary>
/// <param name="value">授权结果</param>
/// <returns></returns>
public static WeiboAccessTokenResult ToWeiboToken(this AuthorizationResult value)
{
value.CheckNotNull(nameof(value));
return(!value.Success ? null : value.Result.ToObject <WeiboAccessTokenResult>());
}