public List<LongTermId> GetLongTermIds()
{
List<LongTermId> ids = new List<LongTermId>();
if (this.idsetList != null)
{
for (int i = 0; i < this.idsetList.Count; i++)
{
ids.AddRange(this.idsetList[i].GetLongTermIds());
}
}
return ids;
}