return component.getCandidatesForGraphVariantSelection()
            .getVariantsForAttributeMatching()
            .stream()
            .flatMap(variant -> variant.prepareForArtifactResolution().getArtifactVariants().stream())
            .map(variant -> new DefaultResolvedVariantResult(
                component.getId(),
                Describables.of(variant.getName()),

        VariantArtifactResolveState variantState = graphVariant.prepareForArtifactResolution();
        Set<? extends VariantResolveMetadata> artifactVariants = variantState.getArtifactVariants();
        ImmutableSet.Builder<ResolvedVariant> resolved = ImmutableSet.builderWithExpectedSize(artifactVariants.size());

            }
            return variantResolver.resolveAdhocVariant(artifactMetadata, artifacts.build());
        }

        @Override
        public Set<? extends VariantResolveMetadata> getArtifactVariants() {
            return variants;
        }
    }

    protected static class ExternalArtifactResolveMetadata implements ComponentArtifactResolveMetadata {