public NGramTokenizerFactory(IDictionary<string, string> args): base(args){minGramSize = GetInt32(args, "minGramSize", NGramTokenizer.DEFAULT_MIN_NGRAM_SIZE);maxGramSize = GetInt32(args, "maxGramSize", NGramTokenizer.DEFAULT_MAX_NGRAM_SIZE);if (args.Count > 0){throw new System.ArgumentException("Unknown parameters: " + args);}}