public static void Main()
{
Node treeNode = new Node();
BinarySearchTree.Insert(ref treeNode, 10);
BinarySearchTree.Insert(ref treeNode, 3);
BinarySearchTree.Insert(ref treeNode, 9);
BinarySearchTree.Remove(ref treeNode, 3);
// Nothing is printed out - node is removed
Console.WriteLine(BinarySearchTree.Search(ref treeNode, 3));
}