which is a doubly linked list and implements the following methods: public DLL() public T getFirst() public T getLast() public void addFirst(T data) public void addLast(T data) public void delete First() public void deleteLast() public void traverse() { public int size() Write java code for a method that takes as parameter one polynomial (represented by a doubly linked lists) and returns the linked list representing its derivative. public DLL derive Polynomial(DLL p)