public void RemoveAddNode(NetworkXServer addNode)
 {
     lock (this.addxServerNodeLock)
     {
         this.addxServerNode.Remove(addNode);
     }
 }
 public void AddAddNode(NetworkXServer addNode)
 {
     lock (this.addxServerNodeLock)
     {
         this.addxServerNode.Add(addNode);
     }
 }