SearchTreeInterface<Person> myTree = new BinarySearchTree<Person>();
Person whitney = new Person("Whitney", "111223333");
Person returnValue = myTree.add(whitney);

Person whitney2 = new Person("Whitney", "444556666");
returnValue = myTree.add(whitney2);


returnValue = myTree.getEntry(whitney);

returnValue = myTree.remove(whitney);
// Version 4.0