private static Properties loadConfigFileProperties() {
        String path = System.getProperty(JGIVEN_CONFIG_PATH, "jgiven.properties");
        String charset = System.getProperty(JGIVEN_CONFIG_CHARSET, "UTF-8");
        Properties properties = new Properties();
        try (Reader reader = Files.newBufferedReader(Paths.get(path), Charset.forName(charset))) {
            properties.load(reader);
        } catch (IOException e) {
            log.debug("config file " + path + " not loaded: " + e.getMessage());
        }
        return properties;
    }
Helper class to access all system properties to configure JGiven.
jgiven-core/src/main/java/com/tngtech/jgiven/impl/Config.java