abstract fun addMapService(net: MessagingService, service: NodeInfo, subscribe: Boolean, ifChangedSinceVer: Int? = null): <ERROR CLASS><Unit>Add a network map service; fetches a copy of the latest map from the service and subscribes to any further updates.
net - the network messaging serviceservice - the network map service to fetch current state from.subscribe - if the cache should subscribe to updatesifChangedSinceVer - an optional version number to limit updating the map based on. If the latest map
version is less than or equal to the given version, no update is fetched.