builder.appendYears();
parsers.add(builder.toParser());
if (endField == IntervalField.YEAR) {
break;
}
builder.appendLiteral("-");
case MONTH:
builder.appendMonths();
parsers.add(builder.toParser());
if (endField != IntervalField.MONTH) {
throw new IllegalArgumentException("Invalid interval qualifier: " + startField + " to " + endField);