code: public double getValue(double maturity, double tenor, double moneyness, QuotingConvention convention, double displacement, AnalyticModel model) {
  		DataKey key = new DataKey(maturity, tenor, moneyness);
  		return convertToConvention(getValue(key), key, convention, displacement, quotingConvention, this.displacement, model);
  	}
docs: Return the value in the given quoting convention.
  Conversion involving receiver premium assumes zero wide collar.
  
  @param maturity The maturity of the option as year fraction from the reference date.
  @param tenor The tenor of the swap as year fraction from the reference date.
  @param moneyness The moneyness as actual difference of strike to par swap rate.
  @param convention The desired quoting convention.
  @param displacement The displacement to be used, if converting to log normal implied volatility.
  @param model The model for context.
  
  @return The value converted to the convention.