anchor.diff:  
   
   %% API
  --export([generate_file_id/0, create_test_file/3, read_test_file/3,
  -    update_test_file/3, remove_test_file/4, verify_test_file/4, verify_storage_on_all_nodes/1]).
  +-export([generate_file_id/0, create_test_file/3, update_test_file/3,
  +    remove_test_file/4, verify_test_file/4, verify_storage_on_all_nodes/1]).
   
   -define(TEST_FILE_NAME_LEN, application:get_env(?APP_NAME,
       storage_test_file_name_size, 32)).
  
positive.code: verify_test_file(Helper, UserCtx, FileId, ExpectedFileContent) ->
      case read_test_file(Helper, UserCtx, FileId) of
          ExpectedFileContent ->
              ok;
          UnexpectedFileContent ->
              {error, {storage_test_file, {ExpectedFileContent, UnexpectedFileContent}}}
  
negative.code:         <<Acc/binary, (rand:uniform(26) + 96)>>
      end, <<>>, lists:seq(1, Length)).
  
  %%-------------------------------------------------------------------
  %% @private
  %% @doc
  %% This function is used to verify whether storage is accessible on
  %% all nodes. It verifies whether it can read the file referenced by
  %% FileId and whether its content is equal to FileContent.
  %% Next, it creates a new test file and recursively calls itself
  %% on the next node from the Nodes list.
  %% @end
  %%-------------------------------------------------------------------
  -spec verify_storage_internal(helpers:helper(), helpers:user_ctx(), [node()],
      helpers:file_id(), Content :: binary()) ->
      {ok, {helpers:file_id(), binary()}} | {error, term()}.
  