/// <summary>
 /// 删除 Logstore,包括所有 Shard 数据,以及索引等。
 /// </summary>
 /// <param name="client">client实例。</param>
 /// <param name="logstoreName">Logstore 的名称,在 Project 下必须唯一。</param>
 /// <param name="project">项目名,此参数将覆盖 client 中默认设置。</param>
 /// <returns>异步响应结果。</returns>
 /// <seealso cref="ILogServiceClient.DeleteLogStoreAsync"/>
 public static Task <IResponse> DeleteLogStoreAsync(this ILogServiceClient client,
                                                    String logstoreName,
                                                    String project = null)
 => client.DeleteLogStoreAsync(new DeleteLogStoreRequest(logstoreName)
 {
     ProjectName = project
 });