示例中babbage-002多了引号

OpenAiService service = new OpenAiService("your_token");
CompletionRequest completionRequest = CompletionRequest.builder()
        .prompt("Somebody once told me the world is gonna roll me")
        **.model("babbage-002"")**
        .echo(true)
        .build();
service.createCompletion(completionRequest).getChoices().forEach(System.out::println);