See app.py for example use.
Set api_type as "ollama", "anthropic", "llama-cpp", "watsonx", "lm-studio" to use the langchain prompt/invocation associated with that provider.
Default api_type is openai and doesn't need to be set.
**Have not tested anthropic, llama-cpp, watsonx, or lm-studio. Ollama and OpenAI working on 5/28/2024.