/// <summary>
/// 更新机器组信息，如果机器组已应用配置，则新加入、减少机器会自动增加、移除配置。
/// </summary>
/// <param name="client">client实例。</param>
/// <param name="groupName">机器分组名称。</param>
/// <param name="machineIdentifyType">机器标识类型，分为 ip 和 userdefined 两种。</param>
/// <param name="machineList">具体的机器标识，可以是 IP 或 userdefined-id。</param>
/// <param name="groupType">机器分组类型，默认为空。</param>
/// <param name="groupTopic">机器分组的 topic，默认为空。</param>
/// <param name="externalName">机器分组所依赖的外部管理标识，默认为空。</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.UpdateMachineGroupAsync"/>
public static Task <IResponse> UpdateMachineGroupAsync(this ILogServiceClient client,
String groupName, String machineIdentifyType, IEnumerable <String> machineList,
String groupType = null, String groupTopic = null, String externalName = null, String project = null)
=> client.UpdateMachineGroupAsync(new UpdateMachineGroupRequest(groupName, machineIdentifyType, machineList)
{
GroupType = groupType,
GroupAttribute = groupTopic == null && externalName == null
? null
: new MachineGroupAttributeInfo
{
GroupTopic = groupTopic,
ExternalName = externalName
},
ProjectName = project
});
