Forgot to include the helper.

Author: marcin-rybacki

SWIG/ratehelpers.i

@@ -48,6 +48,7 @@ using QuantLib::OvernightIndexFutureRateHelper;
 using QuantLib::SofrFutureRateHelper;
 using QuantLib::ConstNotionalCrossCurrencyBasisSwapRateHelper;
 using QuantLib::MtMCrossCurrencyBasisSwapRateHelper;
+using QuantLib::NonDeliverableConstNotionalCrossCurrencySwapRateHelper;
 using QuantLib::IborIborBasisSwapRateHelper;
 using QuantLib::OvernightIborBasisSwapRateHelper;
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