How to OpenAI change the base URL

[kerry-textiq]

When we config the application with openai,
if I config the base_url=thttps://test.company.com

public ResponseEntity<ChatCompletion> chatCompletionEntity(ChatCompletionRequest chatRequest) {

	Assert.notNull(chatRequest, "The request body can not be null.");
	Assert.isTrue(!chatRequest.stream(), "Request must set the steam property to false.");

	return this.restClient.post()
			.uri("/v1/chat/completions")
			.body(chatRequest)
			.retrieve()
			.toEntity(ChatCompletion.class);
}

it automatically add /v1/chat/completions, for my company OpenAi service we do not have v1. How can I bypass this