RiakObjectBuilder builder = RiakObjectBuilder.newBuilder(o.getBucket(), o.getKey());
builder.withValue(nullSafeToBytes(o.getValue()));
builder.withVClock(nullSafeToBytes(o.getVclock()));
builder.withVtag(o.getVtag());
builder.withDeleted(o.getDeleted());
Date lastModified = o.getLastModified();
if (lastModified != null) {
builder.withLastModified(lastModified.getTime());