docs: public static String nextString(int min, int max) {
  		StringBuilder result = new StringBuilder();
  
  		int length = RandomInteger.nextInteger(min, max);
  		for (int i = 0; i < length; i++) {
  			int index = RandomInteger.nextInteger(_chars.length());
  			result.append(_chars.charAt(index));
  		}
  
  		return result.toString();
  	}