/// <summary>
/// 是否具有评分的权利
/// </summary>
/// <param name="authorizer">权限项</param>
/// <param name="threadId">被评论的帖子ID</param>
/// <returns>是否具有评分的权利</returns>
public static bool BarRating(this Authorizer authorizer, long threadId)
{
string errorMessage;
return(authorizer.BarRating(new BarThreadService().Get(threadId), out errorMessage));
}