For example, unzipping a JAR transforms the artifact of the `java-api,jars` variant into the `java-api,classes` variant.
Such a transformation is called _Artifact Transform_.
Gradle allows registering artifact transforms, and when the dependency does not have the requested variant, then Gradle will try to find a chain of artifact transforms for creating the variant.

            validateTargetMachines(targetMachines, targetMachinesOfTestedComponent);
        }
        variants(baseName, Arrays.asList(BuildType.DEBUG), targetMachines, objectFactory, attributesFactory, group, version, action);
    }

        then:
        javaLibrary.parsedModuleMetadata.variant("apiElements") {
            noMoreDependencies()
        }
        javaLibrary.parsedModuleMetadata.variant("runtimeElements") {
            noMoreDependencies()
        }
        !javaLibrary.parsedModuleMetadata.variants.name.contains('optionalFeatureRuntimeElements')
        javaLibrary.parsedModuleMetadata.variant("optionalFeatureRuntimeElementsAlternate") {

        ResolvedArtifactSet result = variants.get(variantKey);
        if (result == null) {
            ResolvedArtifactSet newResult = factory.create(componentIdentifier, sourceVariant, variantDefinition, dependenciesResolverFactory);
            result = variants.putIfAbsent(variantKey, newResult);
            if (result == null) {
                result = newResult;

			allDestinations.InsertAll(t.Tags...)

			// See https://docs.docker.com/engine/reference/commandline/buildx_build/#output
			if a.Push {
				t.Outputs = []string{"type=registry"}
			} else if a.Save {
				n := target
				if variant != "" && variant != DefaultVariant { // For default variant, we do not add it.
					n += "-" + variant
				}

				tarFiles[n+a.suffix] = ""

        require(candidates.variants.size == 1)
        val variant = candidates.variants.first()
        return when (val spec = transforms[variant.attributes.asImmutable()]) {
            null -> {
                // no mapping for extension, so it can be discarded
                if (matchingOnArtifactFormat) {

            println "ids: " + artifacts.collect { it.id }
            println "components: " + artifacts.collect { it.id.componentIdentifier }
            println "variants: " + artifacts.collect { it.variant.attributes }
        }
    }

    void setArtifactTypeAttribute(String artifactTypeAttribute) {
        artifacts = project.configurations.compile.incoming.artifactView {

.Setting Swift compiler options for all variants
====
include::sample[dir="snippets/swift/basic/kotlin",files="build.gradle.kts[tags=swift-compiler-options-all-variants]"]
include::sample[dir="snippets/swift/basic/groovy",files="build.gradle[tags=swift-compiler-options-all-variants]"]
====

                }
            }
        }
    }

    def "can define outgoing variants and artifacts for configuration"() {
        given:
        buildFile << """
configurations {
    compile {
        attributes.attribute(usage, 'for compile')
        outgoing {
            artifact file('lib1.jar')
            variants {
                classes {

        then:
        javaLibrary.parsedModuleMetadata.variant("apiElements") {
            noMoreDependencies()
        }
        javaLibrary.parsedModuleMetadata.variant("runtimeElements") {
            noMoreDependencies()
        }
        !javaLibrary.parsedModuleMetadata.variants.name.contains('optionalFeatureRuntimeElements')
        javaLibrary.parsedModuleMetadata.variant("optionalFeatureRuntimeElementsAlternate") {