impl crate::Bundle {    /// Find an object with the given [`ObjectId`][git_hash::ObjectId] and place its data into `out`.    ///    /// [`cache`][crate::cache::DecodeEntry] is used to accelerate the lookup.    ///    /// **Note** that ref deltas are automatically resolved within this pack only, which makes this implementation unusable    /// for thin packs, which by now are expected to be resolved already.    pub fn find<'a>(        &self,        id: impl AsRef<git_hash::oid>,        out: &'a mut Vec<u8>,        cache: &mut impl crate::cache::DecodeEntry,    ) -> Result<Option<(git_object::Data<'a>, crate::data::entry::Location)>, crate::data::decode::Error> {        let idx = match self.index.lookup(id) {            Some(idx) => idx,            None => return Ok(None),        };        self.get_object_by_index(idx, out, cache).map(Some)    }     /// Special-use function to get an object given an index previously returned from    /// internal_find_pack_index.    ///    /// # Panics    ///    /// If `index` is out of bounds.    pub fn get_object_by_index<'a>(        &self,        idx: u32,        out: &'a mut Vec<u8>,        cache: &mut impl crate::cache::DecodeEntry,    ) -> Result<(git_object::Data<'a>, crate::data::entry::Location), crate::data::decode::Error> {        let ofs = self.index.pack_offset_at_index(idx);        let pack_entry = self.pack.entry(ofs);        let header_size = pack_entry.header_size();        self.pack            .decode_entry(                pack_entry,                out,                |id, _out| {                    self.index.lookup(id).map(|idx| {                        crate::data::decode::entry::ResolvedBase::InPack(                            self.pack.entry(self.index.pack_offset_at_index(idx)),                        )                    })                },                cache,            )            .map(move |r| {                (                    git_object::Data {                        kind: r.kind,                        data: out.as_slice(),                    },                    crate::data::entry::Location {                        pack_id: self.pack.id,                        pack_offset: ofs,                        entry_size: r.compressed_size + header_size,                    },                )            })    }}