code: @RequestMapping(path = "/{orderId}", method = {RequestMethod.GET, RequestMethod.POST})
      public ResponseEntity<Order> getOrder(@PathVariable("orderId") Long orderId) {
          Order order = orderService.getOrder(orderId);
          if(order != null){
              return new ResponseEntity(order, HttpStatus.OK);
          }
          return new ResponseEntity<Order>(HttpStatus.NOT_FOUND);
      }
docs: Get order by id
  @param orderId order id
  @response 200
  @response 404
  @return Order or not found