use gix_hash::ObjectId; pub trait Sealed {} pub type AncestorsIter<Find> = gix_traverse::commit::Simple<Find, fn(&gix_hash::oid) -> bool>; /// An extension trait to add functionality to [`ObjectId`]s.pub trait ObjectIdExt: Sealed {    /// Create an iterator over the ancestry of the commits reachable from this id, which must be a commit.    fn ancestors<Find>(self, find: Find) -> AncestorsIter<Find>    where        Find: gix_object::Find;     /// Infuse this object id `repo` access.    fn attach(self, repo: &crate::Repository) -> crate::Id<'_>;} impl Sealed for ObjectId {} impl ObjectIdExt for ObjectId {    fn ancestors<Find>(self, find: Find) -> AncestorsIter<Find>    where        Find: gix_object::Find,    {        gix_traverse::commit::Simple::new(Some(self), find)    }     fn attach(self, repo: &crate::Repository) -> crate::Id<'_> {        crate::Id::from_id(self, repo)    }}