private Boolean checkBackwardVersionValues(String verbose) {
        if (verbose.isEmpty()) {
            return Boolean.TRUE;
        }
        if (verbose.equalsIgnoreCase("true") || verbose.equalsIgnoreCase("false")) {
            return Boolean.parseBoolean(verbose.toLowerCase());
        }
        return null;
    }
Finis progress meter. Must be always called if {@link #progressStart()} has been used.
src/main/java/io/fabric8/maven/docker/util/AnsiLogger.java