public AdvisedRequest before(AdvisedRequest request) {
		Map<String, Object> context = new HashMap<>(request.adviseContext());

		// 0. Create a query from the user text, parameters, and conversation history.
		Query originalQuery = Query.builder()
			.text(new PromptTemplate(request.userText(), request.userParams()).render())
			.history(request.messages())
			.build();

		// 1. Transform original user query based on a chain of query transformers.
		Query transformedQuery = originalQuery;
		for (var queryTransformer : this.queryTransformers) {
			transformedQuery = queryTransformer.apply(transformedQuery);
		}
...
}