/// <summary>
 /// Creates an empty concurrent list with the specified capacity.
 /// </summary>
 /// <param name="capacity">The capacity.</param>
 public ConcurrentCollectionBase(int capacity)
 {
     this.list = new ConcurrentList(capacity);
 }
 /// <summary>
 /// Creates an empty concurrent list instance with the default capacity.
 /// </summary>
 public ConcurrentCollectionBase()
 {
     this.list = new ConcurrentList();
 }