How can I get the thinking content using a thinking model?

When I use AzureOpenAI or OpenAI, how do I get the thinking content using a thinking model?

There is no relevant description in the springAI documentation。but when i use deepseek，i can get it：

    List<Message> messages = new ArrayList<>();
    messages.add(new UserMessage("9.11 and 9.8, which is greater?"));
    DeepSeekChatOptions promptOptions = DeepSeekChatOptions.builder()
            .model(DeepSeekApi.ChatModel.DEEPSEEK_REASONER.getValue())
            .build();

    Prompt prompt = new Prompt(messages, promptOptions);
    ChatResponse response = chatModel.call(prompt);

    DeepSeekAssistantMessage deepSeekAssistantMessage = (DeepSeekAssistantMessage) response.getResult().getOutput();
    String reasoningContent = deepSeekAssistantMessage.getReasoningContent();
    String text = deepSeekAssistantMessage.getText();

No file, test, or entry point is named. Start by reviewing the AzureOpenAI and OpenAI chat-model APIs and comparing them with the DeepSeek example in the issue. Done means documenting whether thinking content is available and how it can be retrieved for the supported models.