0 * _

        then:
        result.fileFingerprints as Map == [
            "file": fileInputFingerprint,
            "archiveTree": archiveTreeInputFingerprint
        ]
        result.propertiesRequiringIsEmptyCheck == (["archiveTree"] as Set)
    }

    def "ignores already known properties"() {
        when:
        def result = fingerprintInputProperties(