@Override
public boolean input(JIDContext context, Protocol protocol) {
XMucAdmin admin = protocol.cast(XMucAdmin.class);
JID group = super.build(admin.clear().parent().getTo());
for (Relation relation : this.relationContext.myRelations(group, admin.affiliation())) {
// Always not hidden, 永远显示JID
admin.add(new Item(false, relation.cast(MucRelation.class)));
}
context.write(protocol.parent().reply().setType(ProtocolType.RESULT));
return true;