JamesMunns[m]: > <@jamesmunns:beeper.com> allows you to define endpoints, like:
> 
> ```rust
> endpoint!(
>     SetPin, // marker type
>     PinSetting, // request type
>     Result<(), PinError>,
>     "pins/set",
> );
> 
> // on the PC side
> let res: Result<(), PinError> = client.send_resp::<SetPin>(&PinSetting { idx: 3, lvl: Level::High }).await?;
> ```

dope!!