class TransportManager {

    public boolean isTransportRegistered(String transportName) {
        synchronized (mTransportLock) {
            return getRegisteredTransportEntryLocked(transportName) != null;
        }
    }

      TransportManager(Context context, Set<ComponentName> whitelist, String selectedTransport);
    @VisibleForTesting  TransportManager(
            Context context,
            Set<ComponentName> whitelist,
            String selectedTransport,
            TransportClientManager transportClientManager);

}