Complete the function getLastValue such that it returns the Object in the last element of the SimpleLinkedList, or null, if there are no elements.

1 class Node { 2 public Object value; 3 public Node next; 6 public class SimpleLinkedList { private Node first; * Null constructor for SimpleLinkedlist. public SimpleLinkedList() { first = null; * Constructor for simplelinkedlist. * param elements a list of elements to build the Linkedlist from public SimpleLinkedlist(Object ( elements) { if (elements.length > 0) { first = new Node(); Node curr = first; for (int i = 0; i