public bool Contains(TaskColumn value) { return(base.List.Contains(value)); }
public void Remove(TaskColumn value) { base.List.Remove(value); }
public int IndexOf(TaskColumn value) { return(base.List.IndexOf(value)); }
public void Insert(int index, TaskColumn value) { base.List.Insert(index, value); }
public int Add(TaskColumn value) { return(base.List.Add(value)); }