@Override
protected @Nullable ThingHandler createHandler(Thing thing) {
   ThingTypeUID thingTypeUID = thing.getThingTypeUID();

   if (thingTypeUID.equals(THING_TYPE_STATION)) {
      MyBridgeHandler handler = new MyBridgeHandler((Bridge) thing);
      registerDeviceDiscoveryService(handler);
      return handler;
   }
   return null;
}

private void registerDeviceDiscoveryService(MyBridgeHandler bridgHandler) {

   MyDiscoveryService discoveryService = new MyDiscoveryService (bridgHandler);

   this.discoveryServiceRegs.put(bridgHandler.getThing().getUID(), bundleContext.registerService(DiscoveryService.class.getName(), discoveryService,
                new Hashtable<String, Object>()));
}

public MyDiscoveryServiceMyBridgeHandler bridgeHandler) throws IllegalArgumentException {
   super(SEARCH_TIME);
   this.bridgeHandler = bridgeHandler;
}

@Override
protected void startScan() {
   some code....
}