new_contents: #----------------------------------------------------------------------------
  #
  #  Copyright (c) 2014, Enthought, Inc.
  #  All rights reserved.
  #
  #  This software is provided without warranty under the terms of the BSD
  #  license included in /LICENSE.txt and may be redistributed only
  #  under the conditions described in the aforementioned license.  The license
  #  is also available online at http://www.enthought.com/licenses/BSD.txt
  #
  #  Thanks for using Enthought open source!
  #
  #----------------------------------------------------------------------------
  from __future__ import absolute_import
  
  
  def setup(app):
      """ Add the TraitDocumenter in the current sphinx autodoc instance.
  
      """
      from trait_documenter.trait_documenter import TraitDocumenter
      app.add_autodocumenter(TraitDocumenter)
  
subject: add the setup sphinx extension function in __init__.py