@JsonIgnore
	public String getReplyText() {
		if (isEmpty())
			return "";
		StringBuilder sb = new StringBuilder();
		for (ChatCompletionChoice choice : choices) {
			final ChatMessage message = choice.getMessage();
			if (message != null && message.getContent() != null) {
				sb.append(message.getContent());
			}
		}
		return sb.toString();
	}
get reply text from messages' content
@return reply text
src/main/java/org/mvnsearch/chatgpt/model/completion/chat/ChatCompletionResponse.java