@GetMapping("/hello")
	@Operation(responses = @ApiResponse(
			responseCode = "200",
			description = "OK",
			content = @Content(schema = @Schema(implementation = HelloMessage.class))
	))
	public String hello() {
		return "forward:/message";
	}
To test the case a user does not use @RestController but puts @Operation on handler methods
and wants these methods to be exposed.

@author Azige
springdoc-openapi-starter-webmvc-api/src/test/java/test/org/springdoc/api/v30/app149/HelloController.java