/** default, inefficient implementation of Mailbox; only requires a few methods to be implemented */
public static abstract class Default extends Mailbox {
public Mailbox.Iterator iterator(Query q) { return new Mailbox.Iterator.QueryIterator(q, this); }
/** default, inefficient implementation of Mailbox; only requires a few methods to be implemented */
public static abstract class Default extends Mailbox {
public Mailbox.Iterator iterator(Query q) { return new Mailbox.Iterator.QueryIterator(q, this); }