anchor.diff:    % Or as [{{media-type,[{param, value}]}, handler}]
     [].
     % FIXME - should webmachine enforce 406 on no match?
  +  % FIXME - why is the handler only called for GET & HEAD, or if PUT has_resp_body ? Why not POST ?
   
   %% D04
   %% D05 - 406 Not Acceptable
  
positive.code: is_conflict(ReqData, Context) ->
    % Check if PUT is conflict
    {false, ReqData, Context}.
  %% content_types_accepted, knownw_media_type, content_types_accepted:handler (accept_helper)
  
  %%% Webmachine Create Callbacks ------------------------------------------------
  
  
negative.code:   {undefined, ReqData, Context}.
  process_post(ReqData, Context) ->
    % Process POST
    % FIXME content_types_provided:handler is not called automatically
    {false, ReqData, Context}.
  
  %% O16
  