Question$1$ : Composite pattern. You have been asked to create a playlist application that will be used on Android devices $($using the Java language$).$ We will assume that each playlist can be composed of songs or other playlists, or a combination of both. Your project manager has told you that the composite pattern is best used in this situation. The following UML class diagram that communicates the application$$s objects and relationships using the composite pattern. In this assignment you are required to complete the provided code. $($Note: With the exception of the Playlist class, you do not need to actually implement the methods, just write filler comments $($eg$.,//$ play song$).$ With the Playlist class, write out the method to add songs to the playlist$).$