class BloombergEquityFutureOptionVolatilitySurfaceInstrumentProvider extends BloombergFutureOptionVolatilitySurfaceInstrumentProvider {

  @Override
  public ExternalId getInstrument(final Number futureOptionNumber, final Double strike, final LocalDate surfaceDate) {
    ArgumentChecker.notNull(futureOptionNumber, "futureOptionNumber");
    ArgumentChecker.notNull(strike, "strike");
    ArgumentChecker.notNull(surfaceDate, "surface date");
    final String prefix = getFutureOptionPrefix();
    final StringBuffer ticker = new StringBuffer();
    ticker.append(prefix);
    ticker.append(" ");
    final ExchangeTradedInstrumentExpiryCalculator expiryRule = getExpiryRuleCalculator();
    final LocalDate expiry = expiryRule.getExpiryDate(futureOptionNumber.intValue(), surfaceDate, NO_HOLIDAYS);
    ticker.append(FORMAT.format(expiry));
    ticker.append(" ");
    ticker.append(strike > useCallAboveStrike() ? "C" : "P");
    ticker.append(strike);
    ticker.append(" ");
    ticker.append(getPostfix());
    return ExternalId.of(getScheme(), ticker.toString());
  }

  public  BloombergEquityFutureOptionVolatilitySurfaceInstrumentProvider(final String futureOptionPrefix, final String postfix, final String dataFieldName, final Double useCallAboveStrike,
      final String exchangeIdName);
  public  BloombergEquityFutureOptionVolatilitySurfaceInstrumentProvider(final String futureOptionPrefix, final String postfix, final String dataFieldName, final Double useCallAboveStrike,
      final String exchangeIdName, final String schemeName);

}