Anyone attempting to train LLM using ardupilot codebase?

I use ChatGPT all the time to help with coding mavlink communication and the quality of the chats are just ok (very helpful but just ok). I was wondering if anyone knows of any attempts to train a LLM on the ardupilot codebase. I’m not talking about simple indexing of the source code like what I believe GitHub’s Copilot is doing. I’m talking about building a stronger context for better chat interaction with the LLM. I have limited experience with GitHub’s Copilot, so maybe Copilot is more capable and I wasn’t prompting Copilot properly.