added Expansive

NzbDrone.Common/Expansive/TreeNodeList.cs

@@ -0,0 +1,32 @@
+using System.Collections.Generic;
+
+namespace NzbDrone.Common.Expansive
+{
+    internal class TreeNodeList<T> : List<TreeNode<T>>
+    {
+        public TreeNode<T> Parent;
+
+        public TreeNodeList(TreeNode<T> Parent)
+        {
+            this.Parent = Parent;
+        }
+
+        public new TreeNode<T> Add(TreeNode<T> Node)
+        {
+            base.Add(Node);
+            Node.Parent = Parent;
+            return Node;
+        }
+
+        public TreeNode<T> Add(T Value)
+        {
+            return Add(new TreeNode<T>(Value));
+        }
+
+
+        public override string ToString()
+        {
+            return "Count=" + Count.ToString();
+        }
+    }
+}