code: private static String getVersionFromPom(final Path path) {
  		Path folder = path;
  		Path file;
  
  		while (true) {
  			file = folder.resolve("pom.xml");
  			if (Files.exists(file)) {
  				break;
  			}
  
  			folder = folder.getParent();
  			if (folder == null) {
  				Logger.error("pom.xml is missing for \"{}\"", path);
  				return null;
  			}
  		}
  
  		String content;
  		try {
  			content = new String(Files.readAllBytes(file), StandardCharsets.UTF_8);
  		} catch (IOException ex) {
  			Logger.error(ex, "Failed reading \"{}\"", path);
  			return null;
  		}
  
  		Matcher matcher = POM_VERSION.matcher(content);
  		if (matcher.find()) {
  			return matcher.group(1);
  		} else {
  			Logger.error("POM \"{}\" does not contain a version", file);
  			return null;
  		}
  	}
docs: Gets the version for a folder by searching for a pom.xml in the folder and its folders.
  
  @param path
  Path to a folder
  @return Found version or {@code null}