code: private static String getVersionFromJar(final Path path) {
  		Matcher matcher = JAR_VERSION.matcher(path.toString());
  		if (matcher.matches()) {
  			return matcher.group(1);
  		} else {
  			Logger.error("JAR file \"{}\" does not contain a version", path);
  			return null;
  		}
  	}
docs: Gets the version for a JAR file.
  
  @param path
  Path to JAR file
  @return Found version or {@code null}