1 use async_trait::async_trait;
2 
3 #[async_trait]
4 trait Trait {
f(&self)5     async fn f(&self);
6 }
7 
8 struct Thing;
9 
10 #[async_trait]
11 impl Trait for Thing {
f(&self)12     async fn f(&self);
13 }
14 
main()15 fn main() {}
16