/// <summary>
/// 分裂一个指定的 readwrite 状态的 Shard。
/// </summary>
/// <param name="client">client实例。</param>
/// <param name="logstoreName">日志库名称</param>
/// <param name="shardId">Shard ID</param>
/// <param name="splitKey">split 切分位置</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.SplitShardAsync"/>
public static Task <IResponse <IList <ShardInfo> > > SplitShardAsync(this ILogServiceClient client,
String logstoreName, Int32 shardId, String splitKey,
String project = null)
=> client.SplitShardAsync(new SplitShardRequest(logstoreName, shardId, splitKey)
{
ProjectName = project
});