pub trait ModelSession: Send {
type Turn: ModelTurn;
// Required method
fn begin_turn<'life0, 'async_trait>(
&'life0 mut self,
request: TurnRequest,
cancellation: Option<TurnCancellation>,
) -> Pin<Box<dyn Future<Output = Result<Self::Turn, LoopError>> + Send + 'async_trait>>
where Self: 'async_trait,
'life0: 'async_trait;
}