private static ApplicationMetaData metaDataFromDeployData(File appDir, DeployData deployData) {
        return new ApplicationMetaData(deployData.getDeployTimestamp(),
                                       deployData.isInternalRedeploy(),
                                       deployData.getApplicationId(),
                                       computeCheckSum(appDir),
                                       deployData.getGeneration(),
                                       deployData.getCurrentlyActiveGeneration());
    }
Creates package from a local directory, typically deploy app
config-application-package/src/main/java/com/yahoo/config/model/application/provider/FilesApplicationPackage.java