text: public CJKBigramFilterFactory(Map<String,String> args) {super(args);int flags = 0;if (getBoolean(args, "han", true)) {flags |= CJKBigramFilter.HAN;}if (getBoolean(args, "hiragana", true)) {flags |= CJKBigramFilter.HIRAGANA;}if (getBoolean(args, "katakana", true)) {flags |= CJKBigramFilter.KATAKANA;}if (getBoolean(args, "hangul", true)) {flags |= CJKBigramFilter.HANGUL;}this.flags = flags;this.outputUnigrams = getBoolean(args, "outputUnigrams", false);if (!args.isEmpty()) {throw new IllegalArgumentException("Unknown parameters: " + args);}}