anchor.diff:          end,
   
           %% Install function.
  -        lager:info("Installing faulted_for_background pre-interposition for node: ~p", [Node]),
  +        replay_debug("installing faulted_for_background pre-interposition for node: ~p", [Node]),
           ok = rpc:call(Node, ?MANAGER, add_interposition_fun, [{faulted_for_background, Node}, InterpositionFun])
       end, Nodes),
   
  
positive.code: 
      %% Load background annotations.
      BackgroundAnnotations = background_annotations(),
      lager:info("Background annotations are: ~p", [BackgroundAnnotations]),
  
      %% Install faulted tracing interposition function.
      lists:foreach(fun({_, Node}) ->
  
negative.code:         end,
  
          %% Install function.
          replay_debug("installing faulted pre-interposition for node: ~p", [Node]),
          ok = rpc:call(Node, ?MANAGER, add_interposition_fun, [{faulted, Node}, InterpositionFun])
      end, Nodes),
  
  