@IgnoreJRERequirement // https://github.com/mojohaus/animal-sniffer/issues/67
    static boolean updateByteBuffer(Checksum cs, ByteBuffer bb) {
      if (UPDATE_BB != null) {
        try {
          UPDATE_BB.invokeExact(cs, bb);
        } catch (Throwable e) {
          throwIfUnchecked(e);
          // This should be impossible, since `update` has no `throws` clause.
          throw new UndeclaredThrowableException(e);
        }