anchor.diff:  %% storage helper to write data to file.
   %% @end
   -spec write(File :: term(), Offset :: integer(), Buf :: binary(),
  -            EventPolicy :: generate_events | no_events) -> Result when
  +    EventPolicy :: generate_events | no_events) -> Result when
       Result :: BytesWritten | {ErrorGeneral, ErrorDetail},
       BytesWritten :: integer(),
       ErrorGeneral :: atom(),
  
positive.code: %% ====================================================================
  copy_file_acl(From, To) ->
      case get_acl(From) of
          {ok,Acl} ->
              set_acl(To,Acl);
          Error -> Error
      end.
  
  
negative.code:             case ls_chunked(DirPath) of
                  {ok, Childs} ->
                      lists:foreach(
                          fun(#dir_entry{name = Name, type = ?REG_TYPE_PROT}) ->
                              logical_files_manager:delete(filename:join(DirPath, Name));
                              (#dir_entry{name = Name, type = ?DIR_TYPE_PROT}) ->
                                  rmdir_recursive(filename:join(DirPath, Name))
                          end,
                          Childs),
                      logical_files_manager:rmdir(DirPath);
  