anchor.diff:  generic_to_json(ReqData, #ww_ctx{name=Name, commit=Commit}=Ctx, _ListFun, GetFun) ->
       wallaroo_web_common:generic_find(Commit, GetFun, Name, ReqData, Ctx).
   
  +stringize_sha(<<CommitNum:160/big-unsigned-integer>>) ->
  +    lists:flatten(io_lib:format("~40.16.0b", [CommitNum])).
   
   dump_json(Entities, ReqData, Ctx) when is_list(Entities) ->
       error_logger:warning_msg("Entities are ~p~n", [Entities]),
  
positive.code:     {LVK, {array, Ls}};
  jsonify_entry({DVK, Ls}) when DVK =:= parameters ->
      {DVK, {struct, Ls}};
  jsonify_entry(X) ->
      X.
  
  
negative.code: 	Fail when fail =:= find_failed orelse fail =:= none ->
  	    {false, ReqData, Ctx};
  	Head ->
  	    {true, ReqData, Ctx#ww_ctx={head={What, Head}}}
      end.
  
  
  