private void createNewProductMix(final Map<Long, LoanProduct> restrictedProductsAsMap, final Long productId,
final List<ProductMix> productMixes) {
final LoanProduct productMixInstance = findByProductIdIfProvided(productId);
for (final LoanProduct restrictedProduct : restrictedProductsAsMap.values()) {
final ProductMix productMix = ProductMix.createNew(productMixInstance, restrictedProduct);
productMixes.add(productMix);
}
}