class AttachmentHandler implements AttachmentService.Iface {

    @Override
    public List<AttachmentUsage> getUsedAttachments(Source usedBy, UsageData filter) throws TException {
        assertNotNull(usedBy);
        assertTrue(usedBy.isSet());

        return handler.getUsedAttachments(usedBy, filter);
    }

    public  AttachmentHandler();

}