old_contents: from apitestcase.testcase import TestCase
  
  
  __version__ = ("0", "1", "0")
  
  __all__ = [
      "TestCase",
      "__version__",
  ]
  
new_contents: from apitestcase.testcase import TestCase
  
  
  __version__ = ("0", "1", "0")
  
  __all__ = (
      "TestCase",
      "__version__",
  )
  
subject: Make apitestcase __all__ a tuple