What do I need to supply for the "void * callback_context" parameter in dication_session_create?

I am absolutely clueless as to what I need to provide for the final parameter of the dictation_session_create function.

Did you try this example? GitHub - pebble-examples/simple-voice-demo: Simple example app demonstrating how to get text input with the Dictation API.

thank you, that is an excellent resource for what I have been trying to do. I did find elsewhere in the documentation that NULL is a perfectly fine value for a void pointer. My question really reflects my lack of knowledge of c.