*/
class LazyVariantBackedConfigurationMetadata extends AbstractVariantBackedConfigurationMetadata {
    private final VariantMetadataRules variantMetadataRules;

    private List<? extends ModuleDependencyMetadata> calculatedDependencies;

    /**
     * This class wraps the component variant so that the set of attributes returned by ${@link #getAttributes()} includes both
     * the variant and the component attributes.
     * See also ${@link LazyVariantBackedConfigurationMetadata}.RuleAwareVariant which serves a similar purpose.
     */
    private static class ComponentAttributesAwareVariant implements ComponentVariant {
        private final ImmutableAttributesFactory attributesFactory;

        }
        ImmutableList.Builder<VariantGraphResolveMetadata> configurations = new ImmutableList.Builder<>();
        for (ComponentVariant variant : variants) {
            configurations.add(new LazyVariantBackedConfigurationMetadata(getId(), variant, getAttributes(), getAttributesFactory(), variantMetadataRules));
        }
        return addVariantsByRule(Optional.of(configurations.build()));

    }