OpenApi Swagger not showing Exception as a response - spring-boot

Question

I'm using OpenApi Swagger UI (v. 4.14) with SpringBoot. I'm getting all the info I need with the Swagger, except for the exception. Here's my code.
Garage class:
#Schema(description = "Details about the Car")
#Document("Garage")
public class Garage implements Serializable {
#Schema(description = "An ID of the car in the database", accessMode = Schema.AccessMode.READ_ONLY)
#Id
private String id;
#Schema(description = "The name of the car")
#Field("model")
protected String carModel;
#Schema(description = "Car's engine power output")
protected Integer hp;
#Schema(description = "Production year of the car")
#Field("Year")
protected Integer year;
#Schema(description = "The name of car's designer")
protected String designer;
// controllers, getters, setters, toString
Controller:
// some other code
#Operation(summary = "Deletes a car by its id")
#ApiResponses(value = {
#ApiResponse(responseCode = "200",
description = "A car is deleted from the Garage",
content = {#Content(
schema = #Schema(implementation = Garage.class),
mediaType = "application/json")}),
#ApiResponse(responseCode = "404",
description = "A car with this id is not in our garage",
content = #Content(
schema = #Schema(implementation = RestExceptionHandler.class),
mediaType = "application/json"))})
#DeleteMapping(path = "/deleteCar/{carId}")
public void deleteCarFromGarage(#PathVariable("carId") String id) {
garageService.deleteFromGarage(id);
}
// some other code
Exception handler:
#Schema(description = "Exception handling")
#RestControllerAdvice
public class RestExceptionHandler {
#Schema(description = "The ID is not valid")
#ExceptionHandler(value = {IllegalArgumentException.class})
public ResponseEntity<Object> resourceNotFoundException(IllegalArgumentException exception) {
return ResponseEntity.status(HttpStatus.NOT_FOUND).body(exception.getMessage());
}
}
I'm getting 200 responses every time, no matter do I delete a correct id, or an incorrect one.
EDIT: here's my deleteFromGarage method
public void deleteFromGarage(String id) {
garageRepository.deleteById(id);
}

Answer 1

I've edited my deleteFromGarage method, and that solved the issue
deleteFromGarage before:
public void deleteFromGarage(String id) {
garageRepository.deleteById(id);
}
deleteFromGarage now:
public void deleteFromGarage(String id) {
if (garageRepository.findById(id).isEmpty()) {
throw new IllegalArgumentException("The ID is not valid");
} else {
garageRepository.deleteById(id);
}
}