nsert the missing code in the following code fragment. This fragment is intended to remove the first node from the beginning of a linked list: public class Linkedlist private Node first; public Linkedlist() first = null; public int renoveFirst() IF (first - null) { throw new NoSuchelenentException(); } int element - first.info first-element.next return element; First element.next return null; First - First.next; first.net - first return element