@Override
    public int describeContents() {
        return 0;
    }
Heartbeat subscription.

@param src       Source address for Heartbeat messages.
@param dst       Destination address for Heartbeat messages.
@param periodLog Remaining period for processing Heartbeat messages.
@param countLog  Number of Heartbeat messages received.
@param minHops   Minimum hops when receiving Heartbeat messages.
@param maxHops   Maximum hops when receiving Heartbeat messages.
mesh/src/main/java/no/nordicsemi/android/mesh/utils/HeartbeatSubscription.java