Function polkadot_node_subsystem::spawn

pub fn spawn<S, M, TK, Ctx, E, SubSys>(
    spawner: &mut S,
    message_tx: MeteredSender<MessagePacket<M>>,
    signal_tx: MeteredSender<OverseerSignal>,
    unbounded_meter: Meter,
    ctx: Ctx,
    s: SubSys,
    subsystem_name: &'static str,
    futures: &mut FuturesUnordered<Pin<Box<dyn Future<Output = Result<(), SubsystemError>> + Send, Global>>>
) -> Result<OrchestratedSubsystem<M>, SubsystemError>where
    S: Spawner,
    M: Debug + Send + 'static,
    TK: TaskKind,
    Ctx: SubsystemContext<Message = M>,
    E: Error + Send + Sync + 'static + From<OrchestraError>,
    SubSys: Subsystem<Ctx, E>,

Spawn task of kind self using spawner S.