def set2 = of([artifact1])

        when:
        set1.artifacts.visit(visitor)

        then:
        _ * artifact1.id >> Stub(ComponentArtifactIdentifier)
        1 * artifact1.resolveSynchronously >> false
        _ * artifact1.fileSource >> source1
        1 * source1.finalizeIfNotAlready()
        _ * source1.value >> Try.successful(f1)