@Test public void whenPeekThanResultLastElement() { assertThat(list.peek(), is(2)); }
public E peek() { return this.get(size() - 1); }
MyStackList extends MyLinkedList<E> { public E peek() { return this.get(size() - 1); } }
MyStackList extends MyLinkedList<E> { public E peek() { return this.get(size() - 1); }  }
MyStackList extends MyLinkedList<E> { public E peek() { return this.get(size() - 1); }  E peek(); E pop(); void push(E e); }
MyStackList extends MyLinkedList<E> { public E peek() { return this.get(size() - 1); }  E peek(); E pop(); void push(E e);  }