AIT/src/model/builder_traits.rs

pub trait Product<B, T> {
    fn builder() -> B;

    fn get(self) -> T;
}

pub trait Builder<T, I, P> {
    fn build(&self, build_arg: P) -> T;

    fn append_item(self, item: I) -> Self;

    fn append_items(self, items: Vec<I>) -> Self;
}