} else if (o instanceof AddressListField) {
/*
* An address field (From, To, Cc, etc)
*/
AddressListField field = (AddressListField) o;
MailboxList list = field.getAddressList().flatten();
StringBuffer sb = new StringBuffer();
for (int i = 0; i < list.size(); i++) {
Mailbox mb = list.get(i);
sb.append(mb.getAddressString() + "\n");
}