/// <summary>
/// 获取活动节点下的角色数据
/// </summary>
/// <param name="processGUID"></param>
/// <param name="version"></param>
/// <param name="activityGUID"></param>
/// <returns></returns>
public IList <Role> GetActivityRoles(string processGUID, string version, string activityGUID)
{
var processModel = new ProcessModel(processGUID, version);
return(processModel.GetActivityRoles(activityGUID));
}