def matchingCache = Mock(ConsumerProvidedVariantFinder)
    def producerSchema = Mock(AttributesSchemaInternal)
    def consumerSchema = Mock(AttributesSchemaInternal) {
        getConsumerDescribers() >> []
        getFailureDescribers(_) >> []
    }
    def attributeMatcher = Mock(AttributeMatcher)
    def factory = Mock(ArtifactVariantSelector.ResolvedArtifactTransformer)

        }
        return EmptySchema.INSTANCE.disambiguationRules(attribute);
    }

    @Override
    public List<AttributeDescriber> getConsumerDescribers() {
        return consumerAttributeDescribers;
    }

    @Override
    public void addConsumerDescriber(AttributeDescriber describer) {
        consumerAttributeDescribers.add(describer);
    }