anchor.diff:  export(Path, Index) ->
           {ok, RootNode} = plywood_db:fetch(primary_tree, Index),
           export(Path, RootNode).
  +
  +processTree(Tree, Opts)-> ok.
   
   %% ------------------------------------------------------------------
   %% Internal Function Definitions
  
positive.code:                 {continue, {NewSubTree, NewData}} ->
                          {maps:map(fun(Name, Value) -> transform(Operator, Value, [Name | Path]) end, NewSubTree), NewData};
                  {done, NewNode} -> NewNode
          end.
negative.code: 
  %% Processing exports
  -export([export/1, export/2, truncate/2]).
  -export([processTree/2]).
  
  -compile(export_all).
  %% ------------------------------------------------------------------
  