assertFalse(fieldConfigs.getConfig("foo").map(FieldConfigs.Config::isCache).orElse(false));
        assertFalse(fieldConfigs.getConfig("foo").map(FieldConfigs.Config::isOverwrite).orElse(false));
        assertEquals("bar", fieldConfigs.getConfig("foo").map(FieldConfigs.Config::getValues).orElse(new String[0])[0]);
    }

    public void test_cache_true() {

         * Returns true if "overwrite" is present in the values.
         *
         * @return true if overwriting is enabled, false otherwise
         */
        public boolean isOverwrite() {
            for (final String value : values) {
                if ("overwrite".equalsIgnoreCase(value)) {
                    return true;
                }
            }
            return false;