then:
        def e = thrown(MissingMethodException)
        e.message == "Could not find method someConf() for arguments [] on object of type $DefaultArtifactHandler.name."
    }

    void failsWhenAddingToUnknownConfiguration() {
        when:
        artifactHandler.unknown("someNotation")

        then:
        def e = thrown(MissingMethodException)