public Guid AddNewDiscountPolicy(Guid userGuid, Guid shopGuid, object policyType, object field1, object field2, object field3 = null, object field4 = null, object field5 = null) { return(_real == null ? Guid.Empty : _real.AddNewDiscountPolicy(userGuid, shopGuid, policyType, field1, field2, field3, field4, field5)); }