this.metadataSources = ImmutableList.copyOf(metadataSources);
            return self();
        }

        public T setAuthenticated(boolean authenticated) {
            this.authenticated = authenticated;
            return self();
        }

        public T setAuthenticationSchemes(List<String> authenticationSchemes) {

        }

        ImmutableMetadataSources metadataSources = Mock(ImmutableMetadataSources) {
            sources() >> ImmutableList.of(Mock(MetadataSource) {
                create(_, _, _, _, _, _) >> mutableMetadata
            })
        }
        return metadataSources
    }

    private MavenResolver resolver(ImmutableMetadataSources metadataSources = null) {

    }

    @Override
    public void metadataSources(Action<? super MetadataSources> configureAction) {
        invalidateDescriptor();
        metadataSources.reset();
        configureAction.execute(metadataSources);
    }

    @Override

        }

        ImmutableMetadataSources metadataSources = Mock(ImmutableMetadataSources) {
            sources() >> ImmutableList.of(Mock(MetadataSource) {
                create(_, _, _, _, _, _) >> mutableMetadata
            })
        }
        return metadataSources
    }

    private IvyResolver resolver(String ivyPattern = null, ImmutableMetadataSources metadataSources = null) {

        ImmutableList<ResourcePattern> artifactResources,
        ImmutableList<String> metadataSources,
        boolean authenticated,
        ImmutableList<String> authenticationSchemes,
        ImmutableList<URI> artifactUrls
    ) {
        super(id, name, url, metadataSources, authenticated, authenticationSchemes);
        this.artifactUrls = artifactUrls;
        this.metadataResources = metadataResources;

    }

    @Override
    public void metadataSources(Action<? super MetadataSources> configureAction) {
        invalidateDescriptor();
        metadataSources.reset();
        configureAction.execute(metadataSources);
    }

    @Override
    public MetadataSources getMetadataSources() {
        return metadataSources;
    }

    private ImmutableMetadataSources createMetadataSources() {

                metadataSources.ivyDescriptor()
                metadataSources.artifact()
                metadataSources.gradleMetadata()
                metadataSources.ignoreGradleMetadataRedirection()
            }
        })

        when:
        IvyArtifactRepository.MetadataSources metadataSources = repository.getMetadataSources()

        then:

                metadataSources.mavenPom()
                metadataSources.artifact()
                metadataSources.gradleMetadata()
                metadataSources.ignoreGradleMetadataRedirection()
            }
        })

        when:
        MavenArtifactRepository.MetadataSources metadataSources = repository.getMetadataSources()

        then:

            String id = calculateId(IvyResolver.class, effectiveIvyResources, effectiveArtifactResources, metadataSources, hasher -> hasher.putBoolean(m2Compatible));

            return new IvyRepositoryDescriptor(
                id,
                checkNotNull(name),
                url,
                metadataSources,
                checkNotNull(authenticated),
                checkNotNull(authenticationSchemes),

    @RequiredFeature(feature = GradleMetadataResolveRunner.GRADLE_METADATA, value = "true")
    def "can resolve with only gradle metadata"() {
        buildFile << """
            repositories.all {
                metadataSources {
                    gradleMetadata()
                }
            }
            dependencies {
                conf 'org.test:projectA:1.+'
            }
        """

        when: