/**
     * Returns the variant to use when attribute-based variant selection is not enabled.
     */
    @Nullable
    default VariantGraphResolveState getLegacyVariant(ResolutionFailureHandler failureHandler) {
        return getVariantByConfigurationName(Dependency.DEFAULT_CONFIGURATION, failureHandler);
    }

    /**

        VariantGraphResolveState conf = targetComponentState.getCandidatesForGraphVariantSelection().getLegacyVariant(failureHandler);
        if (conf == null) {
            // We wanted to do variant matching, but there were no variants in the target component.