use crate::easy; pub trait Sealed {} impl Sealed for git_ref::Reference {} /// Extensions for [references][git_ref::Reference].pub trait ReferenceExt {    /// Attach [`easy::Access`] to the given reference. It can be detached later with [`detach()]`.    fn attach<A: easy::Access + Sized>(self, access: &A) -> easy::Reference<'_, A>;} impl ReferenceExt for git_ref::Reference {    fn attach<A: easy::Access + Sized>(self, access: &A) -> easy::Reference<'_, A> {        easy::Reference::from_ref(self, access)    }}