private DateTimeField convertField(DateTimeField field, HashMap<Object, Object> converted) {
if (field == null || !field.isSupported()) {
return field;
}
if (converted.containsKey(field)) {
return (DateTimeField) converted.get(field);
}
LimitDateTimeField limitField =
new LimitDateTimeField(
field,
convertField(field.getDurationField(), converted),
convertField(field.getRangeDurationField(), converted),
convertField(field.getLeapDurationField(), converted));
converted.put(field, limitField);
return limitField;
}
