Function mz_storage_controller::persist_handles::append_work

source ยท 
async fn append_work<T2: Timestamp + Lattice + Codec64>(
    write_handles: &mut BTreeMap<GlobalId, WriteHandle<SourceData, (), T2, Diff>>,
    commands: BTreeMap<GlobalId, (Span, Vec<Update<T2>>, Antichain<T2>, Antichain<T2>)>,
) -> Result<(), Vec<(GlobalId, Antichain<T2>)>>