in src/app/ContosoTraders.Api.Core/Services/Implementations/ProductService.cs [90:99]
private IEnumerable<Product> GetProductsByFilter(int[] brands, int[] typeIds)
{
var filteredProducts = _productRepository.Products
.ToList()
.Where(p =>
(brands.Any() ? brands.Contains(p.BrandId.GetValueOrDefault()) : true) &&
(typeIds.Any() ? typeIds.Contains(p.TypeId.GetValueOrDefault()) : true));
return filteredProducts;
}