code: public static String phrase(int minSize, int maxSize) {
          maxSize = Math.max(minSize, maxSize);
          int size = RandomInteger.nextInteger(minSize, maxSize);
          if (size <= 0) return "";
          
          StringBuilder result = new StringBuilder();
          result.append(RandomString.pick(_allWords));
          while (result.length() < size) {
              result.append(" ").append(RandomString.pick(_allWords).toLowerCase());
          }
  
          return result.toString();
      }
docs: Generates a random phrase which consists of few words separated by spaces.
  The first word is capitalized, others are not.
  
  @param minSize     (optional) minimum string length.
  @param maxSize     maximum string length.
  @return a random phrase.