public void addAlbums(final String title,
                        final String artist, final boolean isClassical,
                        final String composer) {
    if (isClassical) {
      this.albums.add(new Album(title, artist, true, composer));
    } else {
      this.albums.add(new Album(title, artist, false, ""));
    }
  }
@Test
  void testAdd_false(){
    DisplayedAlbums displayedAlbums = new DisplayedAlbums();
    displayedAlbums.addAlbums("title", "artist", false, "composer");
    assertEquals("", displayedAlbums.getAlbums().get(0).getComposer());
  }