@RequestMapping(path = "/get/all", method = GET, produces = APPLICATION_JSON_VALUE)
 public ResponseEntity getAll() {
   return ResponseEntity.ok(service.findAll());
 }
 @RequestMapping(path = "/get/{tagId}", method = GET, produces = APPLICATION_JSON_VALUE)
 public ResponseEntity getTag(@PathVariable long tagId) {
   return ResponseEntity.ok(service.getTag(tagId));
 }