private String installedBundlesMessage() {
        StringBuilder sb = new StringBuilder("Installed bundles: {" );
        for (Bundle b : osgi.getBundles())
            sb.append("[" + b.getBundleId() + "]" + b.getSymbolicName() + ":" + b.getVersion() + ", ");
        sb.setLength(sb.length() - 2);
        sb.append("}");
        return sb.toString();
    }
Returns the set of new bundles that were installed.
container-core/src/main/java/com/yahoo/container/core/config/ApplicationBundleLoader.java