code: public static PrettyPrint indentWithSpaces(int number) {
      if (number < 0) {
        throw new IllegalArgumentException("number is negative");
      }
      char[] chars = new char[number];
      Arrays.fill(chars, ' ');
      return new PrettyPrint(chars);
    }
docs: Print every value on a separate line. Use the given number of spaces for indentation.
  
  @param number
  the number of spaces to use
  @return A PrettyPrint instance for wrapped mode with spaces indentation