code: @Override
      void start() throws InitializationException {
          if (hsqlServer == null) {
              hsqlServer = new Server();
              hsqlServer.setLogWriter(null);
              hsqlServer.setSilent(true);
              hsqlServer.setDatabaseName(0, EMBEDED_DB_NAME);
              hsqlServer.setDatabasePath(0, "file:" + EMBEDED_DB_FILE_NAME + ";user=" + getUname() + ";password="
                      + getPassword());
              hsqlServer.start();
          }
      }
docs: {@inheritDoc}
  
  @see org.audit4j.handler.db.EmbededDBServer#start()