@GetMapping("/foo")
	public ResponseEntity<Foo> getFoo() {
		return new ResponseEntity<Foo>(HttpStatus.OK);
	}
Put Foo and Bar in the schema's components, make sure there is an ignored wrapper
({@code ResponseEntity}).
springdoc-openapi-starter-webmvc-api/src/test/java/test/org/springdoc/api/v31/app157/HelloController.java