// that is unset, ‘n = 3’). Further, for ‘strptime’ ‘%OS’ will input
// seconds including fractional seconds. Note that ‘%S’ ignores (and
// not rounds) fractional parts on output.
// TODO: not sure how to handle fractional seconds here
builder.appendSecondOfMinute(2);
break;
default:
throw new EvalException("%O[dHImMUVwWy] not yet implemented");
}