class BlackFormula {

  public final Double computeStrikeImpliedByForwardDelta(final double fwdDelta, final boolean forCall) {
    Validate.notNull(_lognormalVol, "Black Volatility parameter, _vol, has not been set.");
    return BlackFormulaRepository.strikeForDelta(_forward, fwdDelta, _expiry, _lognormalVol, forCall);
  }

  @Deprecated public  BlackFormula(final double forward, final double strike, final double expiry, final Double lognormalVol, final Double fwdPrice, final boolean isCall);

}