public void Remove(ChanMember value)
 {
     a.Remove(value);
 }
 public void Insert(int index, ChanMember value)
 {
     a.Insert(index, value);
 }
 public bool Contains(ChanMember value)
 {
     return a.Contains(value);
 }
 public int IndexOf(ChanMember value)
 {
     return a.IndexOf(value);
 }
 public int Add(ChanMember value)
 {
     return a.Add(value);
 }