Finish the methods in this interface public interface MyList { /** THE STUDENT MUST WRITE THE METHOD HEADERS. THE FIRST ONE IS DONE FOR YOU **/   /**  * Appends the specified element to the end of this list  * @param data  * @return boolean  */  public boolean add(E data); /**  * Inserts the specified element at the specified position in this list.  * Shifts the element currently at that position (if any) and any subsequent  * elements by adding one to their indices.  * @param index - index at which the specified element is to be inserted  * @param data - element to be inserted  * @return boolean  * @throws IndexOutOfBoundsException - if the index is out of range (index < 0 || index > size())  */  boolean add (int index, E data); /**  * Removes all of the elements from this list  */  void clear(); /**  * Returns true if this list contains the specified element  * @param data  * @return boolean  */  boolean contains(E data); /**  * Returns the element at the specified position in this list  * @param index  * @return E  */  E get(int index); /**  * Returns the index of the first occurrence of the specified element in this list  * Return, or -1 if this list does not  * contain the element  * @param data  * @return int  */  int indexOf(E data); /**  * Returns the index of the last matching of the element in this list  * Return -1 if no match  * @param data  * @return int  */  int lastIndexOf(E data); /**  * Returns true if this list contains no elements  * @return boolean  */  boolean isEmpty(); /**  * Removes the element at the specified position in this list.  * Shifts any subsequent elements by subtracting one from their indices.  * @param index - index of the element to be removed  * @return E - the element that was removed from the list  * IndexOutOfBoundsException - if the index is out of range (index < 0 || index >= size())  */  E remove(int index); /**  * Trims the capacity of this MyVector instance to be the list's current size. An application  * can use this operation to minimize the storage of a MyVector instance.  */  void trimToSize(); /**  * Returns the number of elements in this list  * @return int  */  int size(); }