What's the status of the session options config keys?

[Craigacp]

I was looking through https://github.com/microsoft/onnxruntime/blob/master/include/onnxruntime/core/session/onnxruntime_session_options_config_keys.h and wondering about the status of those strings. Is it for things that are unstable (as otherwise they'd have actual methods in the C API), or is it to reduce bloat in the C API?

Should bindings like Java provide proper method entry points which supply the string themselves and enforce type & value safety? E.g. only allow the load_model_format option to be set with the string ORT, or unset completely.

[pranavsharma]

It's to reduce bloat in the C API.

[Craigacp]

So we should provide proper type safe bindings in higher level APIs then? Handling the type safety in Java will be simple as it will all go through the method that passes a key value pair to the native code, but we can guarantee that nothing else will get passed in.