Question B1 A musician is producing a catalogue of sheet music (printed music) she has collected over a number of years. She is writing a java application to help her keep track of the origins and reference numbers she has allocated to each piece of music. The following is an incomplete class definition to represent a piece of sheet music. public class SheetMusic \{ private String title; private String author; private String reference; public SheetMusic (String title, String author, \{ String reference) this.title = title; this.author = author; this.reference = reference; / ** * search title for some words, return true * or false */ public boolean titlematch (String text) \{ \} // bo bempleted \} The class SheetMusic records details for a piece of music in the catalogue. The method titleMatch is incomplete. a) Write appropriate accessor methods for the title, author and reference fields. [3 marks] b) Complete the body of the titleMatch method. The method should return true if the title of the music contains the text parameter, and false otherwise. [4 marks] A separate class, Catalogue, will maintain a list of SheetMusic objects together with the name of the person owning the catalogue. The class has been partially written, as follows: c) Write a constructor for the Catalogue class. The constructor should have a name initialised using a parameter to the constructor, and the tunes field initialised to an empty list. [4 marks] d) Write a method, addTune, to add a SheetMus ic object to the list of tunes. [4 marks] e) The tunesMatching method will search all tunes in the list for a title containing the given text, and return an Arraylist of tunes which contain the text in their title. Complete the body of the tunesMatching method. [10 marks]