text: public JapaneseKatakanaStemFilterFactory(IDictionary<string, string> args): base(args){minimumLength = GetInt32(args, MINIMUM_LENGTH_PARAM, JapaneseKatakanaStemFilter.DEFAULT_MINIMUM_LENGTH);if (minimumLength < 2){throw new ArgumentException("Illegal " + MINIMUM_LENGTH_PARAM + " " + minimumLength + " (must be 2 or greater)");}if (args.Count > 0){throw new ArgumentException("Unknown parameters: " + args);}}