llama-create for a starting point? I did for a quick test of making a backend and it worked great! I'm looking for some advice. What's the easiest way to add the nodes and corresponding metadata that was returned? I want to maintain the streaming response, and don't think I can modify index.as_chat_engine...Just build a custom chat message object like this?/API/chat I can't figure out how to modify the out of the box one from llama-create to essentially emulate it. Any ideas? https://github.com/run-llama/create-llama/