docs: protected CharSequence getLicenseText() {
  		final URL url = getClass().getResource(LICENSE_FILE);
  		if (url != null) {
  			final File filename = new File(url.getPath());
  			try {
  				return Files.toString(filename, Charset.defaultCharset());
  			} catch (IOException exception) {
  				throw new RuntimeException(exception);
  			}
  		}
  		return null;
  	}