code: @RequestMapping("/getUser")
      public ResponseEntity<String> getUser() {
          ConfigurationHandler response =  configurationHandlerService.getConfigForGetUser();
  
          return new ResponseEntity<>(response.getBodyAnswer(), httpHeaders, HttpStatus.valueOf(response.getResult()));
      }
docs: Processes HTTP.GET request (URL: .../getUser).
  @return ResponseEntity with string in JSON format with specified user or 'user no found' error.