@[heap]
struct HeapImage {
mut:
    id int
}

fn create_image() ?HeapImage {
    return HeapImage{
        id: 42
    }
}

fn main() {
    if img := create_image() {
        println(img.id)
    }
    image := HeapImage{
        id: 7
    }
    mut images := []HeapImage{}
    images << image
    indexed := images[0]
    println(indexed.id)
}