chat responses

@Test
void chatV1ResponsesClientTest() {
    OpenAIClient client = OpenAIOkHttpClient.builder()
            .apiKey(apiKey) // Your access key
            .baseUrl("https://ai.pmock.com/api/ai/chat")
            .build();

    ResponseCreateParams build = ResponseCreateParams.builder()
            .model("gpt-5.2")
            .instructions("You are a helpful assistant.")
            .input("Hello!")
            .build();

    com.openai.models.responses.Response response = client.responses().create(build);
    System.out.println(response.output().get(0).message().get().content().get(0).outputText());
}

@Test
void streamChatV1ResponsesClientTest() {
    OpenAIClient client = OpenAIOkHttpClient.builder()
            .apiKey(apiKey) // Your access key
            .baseUrl("https://ai.pmock.com/api/ai/chat")
            .build();

    ResponseCreateParams build = ResponseCreateParams.builder()
            .model("gpt-5.2")
            .instructions("You are a helpful assistant.")
            .input("Hello!")
            .build();

    try (StreamResponse<ResponseStreamEvent> streaming = client.responses().createStreaming(build)) {
        streaming.stream().forEach(chunk -> {
            chunk.outputTextDelta().ifPresent(event -> {
                String delta = event.delta();
                System.out.print(delta);
            });
        });
    }
}