code: @Deprecated
      @Override
      public StringBuffer format(final Calendar calendar, final StringBuffer buf) {
          return printer.format(calendar, buf);
      }
docs: <p>Formats a {@code Calendar} object into the
  supplied {@code StringBuffer}.</p>
  
  @param calendar  the calendar to format
  @param buf  the buffer to format into
  @return the specified string buffer
  @deprecated Use {{@link #format(Calendar, Appendable)}.