pub trait Model<M: Model<M>> {
type K: Copy + Eq + Hash + Serialize + for<'a> Deserialize<'a>;
// Required method
fn id(&self) -> M::K;
}pub trait Model<M: Model<M>> {
type K: Copy + Eq + Hash + Serialize + for<'a> Deserialize<'a>;
// Required method
fn id(&self) -> M::K;
}