/// <summary>
 /// Initializes a new instance of the PActivityList class that contains activities copied
 /// from the specified list and that has the same initial capacity as the number
 /// of activities copied.
 /// </summary>
 /// <param name="list">The list whose activities are copied to the new list.</param>
 public PActivityList(PActivityList list)
 {
     foreach (PActivity activity in list)
     {
         List.Add(activity);
     }
 }
 /// <summary>
 /// Adds the activities of the given list to the end of this list.
 /// </summary>
 /// <param name="list">
 /// The list whose activities should be added to the end of this list.
 /// </param>
 public void AddRange(PActivityList list)
 {
     InnerList.AddRange(list);
 }