jodd-htmlstapler/src/main/java/jodd/htmlstapler/HtmlStaplerBundlesManager.java
public File lookupGzipBundleFile(final File file) throws IOException {
		String path = file.getPath() + ZipUtil.GZIP_EXT;
		File gzipFile = new File(path);

		if (!gzipFile.exists()) {
			if (log.isDebugEnabled()) {
				log.debug("gzip bundle to " + path);
			}
			ZipUtil.gzip(file);
		}

		return gzipFile;
	}
public File lookupGzipBundleFile(final File file) throws IOException {
		String path = file.getPath() + ZipUtil.GZIP_EXT;
		File gzipFile = new File(path);

		if (!gzipFile.exists()) {
			if (log.isDebugEnabled()) {
				log.debug("gzip bundle to " + path);
			}
			ZipUtil.gzip(file);
		}

		return gzipFile;
	}
Locates gzipped version of bundle file. If gzip file
does not exist, it will be created.