public Slime getSlime() {
        Slime slime = new Slime();
        Cursor meta = slime.setObject();
        Cursor deploy = meta.setObject("deploy");
        deploy.setString("from", "unknown");
        deploy.setLong("timestamp", deployTimestamp);
        deploy.setBool("internalRedeploy", internalRedeploy);
        Cursor app = meta.setObject("application");
        app.setString("id", applicationId.serializedForm());
        app.setString("checksum", checksum);
        app.setLong("generation", generation);
        app.setLong("previousActiveGeneration", previousActiveGeneration);
        return slime;
    }
Returns the previously active generation at the point when this application was created.
config-model-api/src/main/java/com/yahoo/config/application/api/ApplicationMetaData.java