@Override
    public Decorator findById(String decoratorId) throws NotFoundException {
        final Decorator result = coll.findOneById(decoratorId);
        if (result == null) {
            throw new NotFoundException("Decorator with id " + decoratorId + " not found.");
        }

        return result;
    }
@Test
    public void findByIdThrowsNotFoundExceptionForMissingDecorator() throws NotFoundException {
        expectedException.expect(NotFoundException.class);
        expectedException.expectMessage("Decorator with id 588bcafebabedeadbeef0001 not found.");

        decoratorService.findById("588bcafebabedeadbeef0001");
    }