public List<FineTuningJob> listFineTuningJobs() {
        return execute(api.listFineTuningJobs()).data;
    }
Creates a new OpenAiService that wraps OpenAiApi.
The ExecutorService must be the one you get from the client you created the api with
otherwise shutdownExecutor() won't work.
<p>
Use this if you need more customization.

@param api             OpenAiApi instance to use for all methods
@param executorService the ExecutorService from client.dispatcher().executorService()
service/src/main/java/com/theokanning/openai/service/OpenAiService.java