if (optRev.isPresent()) {
// Revision is in format 2017-10-26, we want the output to be 171026, which is a matter of picking the
// right characters.
- final String rev = optRev.get().toString();
+ final String rev = optRev.orElseThrow().toString();
checkArgument(rev.length() == 10, "Unsupported revision %s", rev);
packageNameBuilder.append("rev").append(rev, 2, 4).append(rev, 5, 7).append(rev.substring(8));
} else {