old_contents: """
  Package containing core nipy classes.
  """
  __docformat__ = 'restructuredtext'
  
  from .volumes.base_image import BaseImage
  from .volumes.volume_image import VolumeImage
  from .transforms.transform import Transform
  from .transforms.affine_transform import AffineTransform
  
  from nipy.testing import Tester
  test = Tester().test
  bench = Tester().bench
  
new_contents: """
  Package containing core nipy classes.
  """
  __docformat__ = 'restructuredtext'
  
  from .volumes.volume_field import VolumeField
  from .volumes.volume_image import VolumeImage
  from .transforms.transform import Transform
  from .transforms.affine_transform import AffineTransform
  
  from nipy.testing import Tester
  test = Tester().test
  bench = Tester().bench
  
subject: Change __init__ to match renaming