public static final String JCIFS_PREFIX = "jcifs.";
            public static final String HTML_CANONICAL_XPATH = "html.canonical.xpath";
            public static final String HTML_PRUNED_TAGS = "html.pruned.tags";
            public static final String PIPELINE = "pipeline";
            public static final String IGNORE_ROBOTS_TAGS = "ignore.robots.tags";
            public static final String SCRIPT_TYPE = "script.type";

                if (matcher.group(4) != null) {
                    tag.setId(matcher.group(4).substring(1));
                }
                return tag;
            }
            throw new FessSystemException("Invalid pruned tag: " + v);
        }).toArray(n -> new PrunedTag[n]));
    }