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