pub trait SessionGraphHost: Send + Sync {
// Provided method
fn append_session_nodes<'life0, 'life1, 'async_trait>(
&'life0 self,
_session_id: &'life1 str,
_request: AppendSessionNodesRequest,
) -> Pin<Box<dyn Future<Output = Result<AppendSessionNodesResult, PluginError>> + Send + 'async_trait>>
where Self: 'async_trait,
'life0: 'async_trait,
'life1: 'async_trait { ... }
}