code: public static Date toDateFromMonthYearFormat(String date) {
      if (date == null) {
        return null;
      }
  
      if ("0000-00".equals(date)) {
        return null;
      }
  
      return toDateWithFormatString(date, FACEBOOK_MONTH_YEAR_DATE_FORMAT);
    }
docs: Returns a Java representation of a Facebook "month-year" {@code date} string.
  
  @param date
  Facebook {@code date} string.
  @return Java date representation of the given Facebook "month-year" {@code date} string or {@code null} if
  {@code date} is {@code null} or invalid.