private VersionState createVersionState(Curator curator,
                                            Version vespaVersion,
                                            boolean throwIfUpgradeBetweenVersionsTooFarApart) throws IOException {
        return new VersionState(temporaryFolder.newFile(), curator, vespaVersion, throwIfUpgradeBetweenVersionsTooFarApart);
    }
@author Ulf Lilleengen
@author Harald Musum
configserver/src/test/java/com/yahoo/vespa/config/server/ConfigServerBootstrapTest.java