@Nullable
    BuildServiceRegistration<?, ?> findByType(Class<?> type);

    @Nullable
    BuildServiceRegistration<?, ?> findRegistration(Class<?> type, String name);

    Set<BuildServiceRegistration<?, ?>> findRegistrations(Class<?> type, String name);

    List<ResourceLock> getSharedResources(Set<Provider<? extends BuildService<?>>> services);

    }

    @Nullable
    @Override
    public DefaultServiceRegistration<?, ?> findRegistration(Class<?> type, String name) {
        return uncheckedCast(!name.isEmpty() ?
            findByName(name) :
            findByType(type)
        );
    }

    @Override
    public Set<BuildServiceRegistration<?, ?>> findRegistrations(Class<?> type, @Nullable String name) {
        return withRegistrations(registrations ->

            BuildServiceRegistry buildServiceRegistry = internalServices.get(BuildServiceRegistry.class);
            Set<BuildServiceRegistration<?, ?>> results = ((BuildServiceRegistryInternal) buildServiceRegistry).findRegistrations(this.getType(), this.getName());
            if (results.isEmpty()) {
                return null;
            }
            if (results.size() > 1) {
                if (!failIfAmbiguous) {