question: private void removeDownloadIdFromSharedPrefs ( int downloadId ) { Set < String > downloadIds = getStoredDownloadInfo ( DOWNLOAD_NOTIFICATION_IDS ) ; String id = Integer . toString ( downloadId ) ; if ( downloadIds . contains ( id ) ) { downloadIds . remove ( id ) ; storeDownloadInfo ( DOWNLOAD_NOTIFICATION_IDS , downloadIds ) ; } }
target:  Removes a donwload Id from SharedPrefs.