new_contents: # -*- coding: utf-8 -*-
  """
      flask.ext
      ~~~~~~~~~
  
      Redirect imports for extensions.  This module basically makes it possible
      for us to transition from flaskext.foo to flask_foo without having to
      force all extensions to upgrade at the same time.
  
      When a user does ``from flask.ext.foo import bar`` it will attempt to
      import ``from flask_foo import bar`` first and when that fails it will
      try to import ``from flaskext.foo import bar``.
  
      We're switching from namespace packages because it was just too painful for
      everybody involved.
  
      :copyright: (c) 2011 by Armin Ronacher.
      :license: BSD, see LICENSE for more details.
  """
  
  
  def setup():
      from ..exthook import ExtensionImporter
      importer = ExtensionImporter(['flask_%s', 'flaskext.%s'], __name__)
      importer.install()
  
  
  setup()
  del setup
  
subject: Add lib file