proc handleHop(r: Relay; connSrc: Connection; msg: RelayMessage): InternalRaisesFuture[
    void, (CancelledError,)] {....stackTrace: false, raises: [], gcsafe,
                               raises: [], tags: [RootEffect], forbids: [].}

proc handleHopStreamV2(r: Relay; conn: Connection): InternalRaisesFuture[void,
    (CancelledError, LPStreamError)] {....stackTrace: false, raises: [], gcsafe,
                                       raises: [], tags: [RootEffect],
                                       forbids: [].}

proc isRelayed(conn: Connection): bool {....raises: [], tags: [], forbids: [].}

proc new(T: typedesc[Relay];
         reservationTTL: times.Duration = DefaultReservationTTL;
         limitDuration: uint32 = DefaultLimitDuration;
         limitData: uint64 = DefaultLimitData;
         heartbeatSleepTime: uint32 = DefaultHeartbeatSleepTime;
         maxCircuit: int = MaxCircuit;
         maxCircuitPerPeer: int = MaxCircuitPerPeer;
         msgSize: int = RelayMsgSize; circuitRelayV1: bool = false): T:type {.
    ...raises: [].}

proc setup(r: Relay; switch: Switch) {....raises: [], tags: [], forbids: [].}

method start(r: Relay): InternalRaisesFuture[void, (CancelledError,)] {.
    ...stackTrace: false, raises: [], gcsafe, raises: [],
    tags: [WriteIOEffect, RootEffect], forbids: [].}

method stop(r: Relay): InternalRaisesFuture[void, void] {....stackTrace: false,
    raises: [], gcsafe, raises: [], tags: [WriteIOEffect, RootEffect],
    forbids: [].}