anchor.diff:                acl=Acl,
                 props=Properties,
                 cluster_id=ClusterID};
  -              
  +
   upgrade_manifest(?MANIFEST{}=M) ->
       M.
   
  
positive.code:                         Active ->
                              Acc;
                          Elem=?MANIFEST{state=active} ->
                              [UUID | Acc];
                          _ ->
                              Acc
  
negative.code: %% active state
  -spec active_manifests(term()) -> [lfs_manifest()].
  active_manifests(Manifests) ->
      IsActive =
          fun (?MANIFEST{state=State}) ->
                  State == active orelse State == writing
          end,
      lists:filter(IsActive, orddict_values(Manifests)).
  
  %% @doc Mark all active manifests
  