use std::convert::TryFrom; use crate::easy::{object, Object, ObjectRef, TreeRef}; impl<'repo, A> std::fmt::Debug for ObjectRef<'repo, A> {    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {        std::fmt::Debug::fmt(&self.id, f)    }} impl<'repo, A> From<ObjectRef<'repo, A>> for Object {    fn from(r: ObjectRef<'repo, A>) -> Self {        r.into_owned()    }} impl<'repo, A> AsRef<[u8]> for ObjectRef<'repo, A> {    fn as_ref(&self) -> &[u8] {        &self.data    }} impl AsRef<[u8]> for Object {    fn as_ref(&self) -> &[u8] {        &self.data    }} impl<'repo, A> TryFrom<ObjectRef<'repo, A>> for TreeRef<'repo, A> {    type Error = ObjectRef<'repo, A>;     fn try_from(value: ObjectRef<'repo, A>) -> Result<Self, Self::Error> {        match value.kind {            object::Kind::Tree => Ok(TreeRef {                id: value.id,                data: value.data,                access: value.access,            }),            _ => Err(value),        }    }}