anchor.diff:      ?assertEqual(FilesNum * FileSize, current_size(W1, ?SPACE_ID), ?ATTEMPTS),
       % "On the fly" replication of the ExtraFile will cause occupancy
       % to exceed the Threshold.
  +    ?assertDistribution(W1, SessId, ?DISTS([DomainP2], [ExtraFileSize]), EG),
       read_file(W1, SessId, EG, ExtraFileSize),
       {ok, [ARId]} = ?assertMatch({ok, [_]}, list(W1, ?SPACE_ID), ?ATTEMPTS),
   
  
positive.code:     DomainP2 = ?GET_DOMAIN_BIN(W2),
      enable_file_popularity(W1, ?SPACE_ID),
      Guid = write_file(W1, SessId, ?FILE_PATH(FileName), Size),
      % read file on W2 to replicate it
      read_file(W2, SessId2, Guid, Size),
  
  
negative.code:     DomainP2 = ?GET_DOMAIN_BIN(W2),
      enable_file_popularity(W1, ?SPACE_ID),
      Guid = write_file(W1, SessId, ?FILE_PATH(FileName), Size),
      ?assertDistribution(W2, SessId2, ?DISTS([DomainP1], [Size]), Guid),
      % read file on W2 to replicate it
      read_file(W2, SessId2, Guid, Size),
  
  