change default header name of api key, change api key model

Is there a way to do this instead of using the default? Would be nice to be able to overwrite this in settings.py

Also I want to use an existing api key model, would be cool to add that too.

Start by locating the default API key header configuration and the API key model integration referenced in settings.py. Determine how settings can override the header name and how an existing API key model could be selected. Done means both options work without requiring the default header or model.

Written by the indexing model from the issue text.