if (graphVariants == null) {
            graphVariants = buildVariantsForGraphTraversal(getVariants());
        }
        return graphVariants.orElse(Collections.emptyList());
    }

    private Optional<List<? extends VariantGraphResolveMetadata>> buildVariantsForGraphTraversal(List<? extends ComponentVariant> variants) {
        if (variants.isEmpty()) {

    }

    public ImmutableMap<String, Configuration> getConfigurationDefinitions() {
        return configurationDefinitions;
    }

    private Optional<List<? extends VariantGraphResolveMetadata>> buildVariantsForGraphTraversal() {
        ImmutableList<? extends ComponentVariant> variants = getVariants();
        if (variants.isEmpty()) {
            return addVariantsByRule(maybeDeriveVariants());
        }