anchor.diff:          end
       end,
   
  -    try IOFun() of
  -        _ -> ok
  +    try IOFun()
       catch
           error:_ -> error
       end.
  
positive.code: 
  
  -spec perform_io_test(session:id(), file_meta:path()) -> ok | error.
  perform_io_test(Session, Path) ->
      BytesSize = 5000,
      SampleFileContent = str_utils:rand_hex(BytesSize),
  
  
negative.code:     FilePath = filename:join([Path, <<"test_file">>]),
  
      IOFun = fun() ->
          {ok, Guid} = lfm:create(SessionId, FilePath),
          {ok, OpenHandle} = lfm:open(SessionId, ?FILE_REF(Guid), rdwr),
          {ok, WriteHandle, Size} = lfm:write(OpenHandle, 0, SampleFileContent),
          {ok, _ReadHandle, Data} = lfm:read(WriteHandle, 0, Size),
          case {Size, Data} of
  