/// <summary>
 /// Returns whether the specified column exists in the collection.
 /// </summary>
 /// <param name="conditionalColumn">The conditional column.</param>
 /// <returns>Whether the specified column exists in the collection.</returns>
 public bool Contains(ConditionalColumn conditionalColumn)
 {
     return List.Contains(conditionalColumn);
 }
 /// <summary>
 /// Adds the specified conditional column.
 /// </summary>
 /// <param name="conditionalColumn">The conditional column.</param>
 public void Add(ConditionalColumn conditionalColumn)
 {
     List.Add(conditionalColumn);
 }
 /// <summary>
 /// Inserts the specified index.
 /// </summary>
 /// <param name="index">The index.</param>
 /// <param name="conditionalColumn">The conditional column.</param>
 public void Insert(int index, ConditionalColumn conditionalColumn)
 {
     List.Insert(index, conditionalColumn);
 }
 /// <summary>
 /// Removes the specified conditional column.
 /// </summary>
 /// <param name="conditionalColumn">The conditional column.</param>
 public void Remove(ConditionalColumn conditionalColumn)
 {
     List.Remove(conditionalColumn);
 }
 /// <summary>
 /// Returns the index of the specified column.
 /// </summary>
 /// <param name="conditionalColumn">The conditional column.</param>
 /// <returns>
 /// The index of the specified column.
 /// </returns>
 public int IndexOf(ConditionalColumn conditionalColumn)
 {
     return List.IndexOf(conditionalColumn);
 }