Function post_complete_route 

pub(crate) async fn post_complete_route(
    __arg0: State<State>,
    __arg1: ClientIp,
    __arg2: Form<CompleteParams>,
) -> Response

The approval form’s target.

Approving mints the authorization code and hands it to the client; anything else, the Deny button included, refuses and burns both single-use credentials. An unrecognized action therefore fails closed.