Type Alias SBox 

pub type SBox<T, S> = State<StorageStateOwnedBox, T, S>;

Owned state whose runtime value is stored in Box<T>.

This is only a type alias for State<StorageStateOwnedBox, T, S>. Create it from an already-owned state with SBox::new(State<StorageStateOwnedBox, T, S>::new) so the current state is preserved while changing containers:

let owned: State<SOwned, Connection, Disconnected> = State::new(connection);
let boxed: SBox<Connection, Disconnected> = SBox::new(owned);

Aliased Type

pub struct SBox<T, S> { /* private fields */ }