code: private static String formatResolution(Resolution resolution, int depth)
      {
          return new StringBuilder(MIN_LENGTH).append(String.valueOf(resolution.getWidth()))
                                              .append(Constant.STAR)
                                              .append(String.valueOf(resolution.getHeight()))
                                              .append(Constant.STAR)
                                              .append(depth)
                                              .append(Constant.SPACE)
                                              .append(Constant.AT)
                                              .append(String.valueOf(resolution.getRate()))
                                              .append(Constant.UNIT_RATE)
                                              .toString();
      }
docs: Format resolution to string.
  
  @param resolution The resolution reference.
  @param depth The depth reference.
  @return The formatted string.