100     private static ServerHolder sServerHolder;  field in MtpService
130             if (sServerHolder != null) {  in onDestroy()
131                 sServerHolder.database.setServer(null);  in onDestroy()
168             if (sServerHolder != null) {  in startServer()
203             sServerHolder = new ServerHolder(server, database);  in startServer()
223             if (sServerHolder != null) {  in addStorage()
224                 sServerHolder.database.addStorage(volume);  in addStorage()
231             if (sServerHolder != null) {  in removeStorage()
232                 sServerHolder.database.removeStorage(volume);  in removeStorage()
257                 if (sServerHolder == null) {  in run()
261                 sServerHolder.close();  in run()
262                 sServerHolder = null;  in run()