anchor.diff:  , pytestCheckHook
   , freezegun
   , google-cloud-core
  +, google-cloud-storage
   , google-cloud-testutils
   , google-resumable-media
   , grpcio
  
positive.code:   preCheck = ''
      rm -r google
    '';
  
    pythonImportsCheck = [
      "google.cloud.bigquery"
  
negative.code:     ipython
      mock
      pandas
      psutil
      google-cloud-storage
      pytestCheckHook
    ];
  
  