1 An associated item wasn't found in the given type.
3 Erroneous code example:
9 fn hello() -> <Self as Hello>::You; // error!
13 In this example, we tried to use the non-existent associated type `You` of the
14 `Hello` trait. To fix this error, use an existing associated type:
20 fn hello() -> <Self as Hello>::Who; // ok!