code: static char[][] convert(FigletFont figletFont, String message){
      char[][] result = new char[figletFont.height][];
      for (int c = 0; c < message.length(); c++){
        result = Smushing.addChar(figletFont, result, figletFont.getChar(message.charAt(c)));
      }
      return result;
    }
docs: Converts the message using provided {@link FigletFont}.
  @param figletFont Font details
  @param message Message to convert
  @return Array (lines) of char arrays