Set<MailItemDataSource> dsSet = MailItemDataSource.getAll(mbox, zsc.getOperationContext());
Collection<MailItemDataSource> dsSet = mbox.getDataSources(zsc.getOperationContext());
    public Element handle(Element request, Map<String, Object> context)    throws ServiceException, SoapFaultException {    	ZimbraSoapContext zsc = getZimbraSoapContext(context);    	Mailbox mbox = getRequestedMailbox(zsc);    	Set<MailItemDataSource> dsSet = MailItemDataSource.getAll(mbox, zsc.getOperationContext());    	Element response = zsc.createElement(MailService.GET_DATA_SOURCES_RESPONSE);    	for (MailItemDataSource ds : dsSet) {    		ToXML.encodeDataSource(response, ds);    	}    	return response;    }