docs: protected Runnable wrapTask(Runnable command) {
      final Callable<Object> wrapped = wrapTask(Executors.callable(command, null));
      return new Runnable() {
        @Override
        public void run() {
          try {
            wrapped.call();
          } catch (Exception e) {
            throwIfUnchecked(e);
            throw new RuntimeException(e);
          }
        }
      };
    }