fk.rs

trait Fk {
    fn get_fks<T>(&self, remote: T) -> Vec<i32>;
}

struct Item {}
struct ItemGroup {}

impl Fk for Item {
    fn get_fks<T>(&self, remote: T) -> Vec<i32> {
        let mut vec = Vec::new();
        match remote {
            Item => vec.push(3),
        }
        vec
    }
}
impl Fk for ItemGroup {
    fn get_fks<T>(&self, _: T) -> Vec<i32> {
        Vec::new()
    }
}


fn main() {
    let item = Item {};
    let group = ItemGroup {};
    println!("{:?}", item.get_fks(Item));
}