mapping page entity to dto
@GetMapping
public ResponseEntity<List<ObjectDTO>> findAll (Pageable pageable){
Page<ObjectEntity> page = objectServiceService.findAll(pageable);
HttpHeaders headers = PaginationUtil.generatePaginationHttpHeaders(page, "your-endpoint-here");
return new ResponseEntity<>(objectMapper.toDto(page.getContent()), headers, HttpStatus.OK);
}