Write the code for the del () method in the following doubly linked list class public class ObjDList { private Obj Node list; private Obj Node tail; public ObjDList() { list = null; tail = null; } public void del (int k) { } // delete the node from the list that is in position k // from the start of the list, if it exists private class ObjNode { public String item; public Obj Node next; public Obj Node prev; public Obj Node (String element) { item = element; } } next = null; prev = null;