import java.io.File;

public abstract class SoundFeedbackPlugin implements Plugin<Settings> {
    @Inject
    protected abstract FlowScope getFlowScope(); // <1>

    @Inject
    protected abstract FlowProviders getFlowProviders(); // <1>

    @Override
    public void apply(Settings settings) {
// end::flow-action[]
        settings.getGradle().getSharedServices().registerIfAbsent("soundService", SoundService.class, spec -> {});

                    return "I'm not using my parameter"
                }
            }

            interface FlowProvidersGetter {
                @Inject FlowProviders getFlowProviders()
            }

            def flowProviders = objects.newInstance(FlowProvidersGetter).flowProviders

            providers.of(ResultSource) {