CarService.java

    /**
     * get element using Criteria.
     *
     * @param spec    *
     * @param headers pagination data
     * @param sort    sort criteria
     * @return retrieve elements with pagination
     */
    public PagingResponse get(Specification<Car> spec, HttpHeaders headers, Sort sort) {
        if (isRequestPaged(headers)) {
            return get(spec, buildPageRequest(headers, sort));
        } else {
            final List<Car> entities = get(spec, sort);
            return new PagingResponse((long) entities.size(), 0L, 0L, 0L, 0L, entities);
        }
    }