metadata.getStatus() >> "status"
        metadata.getBranch() >> "branch"
        def factory = new MetadataDescriptorFactory(metadata)

        when:
        def descriptor = factory.createDescriptor(IvyModuleDescriptor)

        then:
        descriptor.branch == "branch"
        descriptor.ivyStatus == "status"
        descriptor.extraInfo.asMap() == [(new QName("foo")): "bar"]
    }

    }

    @Override
    final public T getDescriptor() {
        if (descriptor == null) {
            descriptor = createDescriptor();
        }
        return descriptor;
    }

    protected void invalidateDescriptor() {
        descriptor = null;
    }

    protected abstract T createDescriptor();

    @Override
    public void setName(String name) {
        invalidateDescriptor();
        super.setName(name);

        this.descriptorFactory = new MetadataDescriptorFactory(metadata);
    }

    @Override
    public <T> T getDescriptor(Class<T> descriptorClass) {
        return descriptorFactory.createDescriptor(descriptorClass);
    }

    @Override
    public ComponentMetadataDetails getDetails() {
        return details;
    }

    private final ModuleComponentResolveMetadata metadata;

    public MetadataDescriptorFactory(ModuleComponentResolveMetadata metadata) {
        this.metadata = metadata;
    }

    public <T> T createDescriptor(Class<T> descriptorClass) {
        if (isIvyMetadata(descriptorClass, metadata)) {
            IvyModuleResolveMetadata ivyMetadata = (IvyModuleResolveMetadata) metadata;

    @Override
    public Class<ExecuteWorkItemBuildOperationType.Details> getDetailsType() {
        return ExecuteWorkItemBuildOperationType.Details.class;
    }

    @Override
    public DefaultWorkItemDescriptor createDescriptor(ExecuteWorkItemBuildOperationType.Details details, BuildOperationDescriptor buildOperation, @Nullable OperationIdentifier parent) {
        OperationIdentifier id = buildOperation.getId();

     */
    default List<? extends BuildOperationTracker> getTrackers() {
        return Collections.emptyList();
    }

    /**
     * Maps the descriptor for the given build operation.
     */
    TO createDescriptor(DETAILS details, BuildOperationDescriptor buildOperation, @Nullable OperationIdentifier parent);

    /**
     * Maps the start event for the given build operation.
     */

        this.descriptorFactory = new MetadataDescriptorFactory(metadata);
    }

    @Override
    public <T> T getDescriptor(Class<T> descriptorClass) {
        return descriptorFactory.createDescriptor(descriptorClass);
    }

    @Override
    public ComponentMetadataDetails getDetails() {
        createMutableMetadataIfNeeded();
        if (details == null) {

        if (node instanceof TransformStepNode) {
            return descriptors.get(node);
        }
        return null;
    }

    @Override
    public DefaultTransformDescriptor createDescriptor(ExecutePlannedTransformStepBuildOperationDetails details, BuildOperationDescriptor buildOperation, @Nullable OperationIdentifier parent) {
        OperationIdentifier id = buildOperation.getId();

    }

    @Override
    public List<BuildOperationTracker> getTrackers() {
        return ImmutableList.of(projectConfigurationTracker);
    }

    @Override
    public DefaultProjectConfigurationDescriptor createDescriptor(ConfigureProjectBuildOperationType.Details details, BuildOperationDescriptor buildOperation, @Nullable OperationIdentifier parent) {
        OperationIdentifier id = buildOperation.getId();

    public Class<ExternalResourceReadBuildOperationType.Details> getDetailsType() {
        return ExternalResourceReadBuildOperationType.Details.class;
    }

    @Override
    public DefaultFileDownloadDescriptor createDescriptor(ExternalResourceReadBuildOperationType.Details details, BuildOperationDescriptor buildOperation, @Nullable OperationIdentifier parent) {
        try {