How to use the @here/harp-mapview-decoder/index-worker.WorkerServiceManager.getInstance function in @here/harp-mapview-decoder

static start() {
        WorkerServiceManager.getInstance().register({
            serviceType: "geojson-tile-decoder",
            factory: (serviceId: string) =>
                TileDecoderService.start(serviceId, new GeoJsonTileDecoder())
        });
    }
}

static start() {
        WorkerServiceManager.getInstance().register({
            serviceType: CUSTOM_DECODER_SERVICE_TYPE,
            factory: (serviceId: string) => TileDecoderService.start(serviceId, new CustomDecoder())
        });
    }
}

static start() {
        WorkerServiceManager.getInstance().register({
            serviceType: OMV_TILE_DECODER_SERVICE_TYPE,
            factory: (serviceId: string) =>
                TileDecoderService.start(serviceId, new OmvTileDecoder())
        });
    }
}