DiscoveryModule.java

@Module
public class DiscoveryModule {
        private final Context context;

        public DiscoveryModule(Context context) {
            this.context = context;
        }

        @Provides
        @Singleton
        public Context providesContext() {
            return context;
        }

        @Provides @Singleton
        public RxDiscoveryManager providesDiscoveryManager(Context context) {
            return new RxDiscoveryManager((NsdManager) context.getSystemService(Context.NSD_SERVICE),"AR_RxDiscoveryManager");
        }
}