How to use the pyramid.testing.tearDown function in pyramid

def tearDown(self):
        import transaction
        transaction.abort()
        testing.tearDown()

def config(request):
    """Return dummy testing configuration."""
    config = testing.setUp()
    config.include('tzf.pyramid_yml')
    config.config_defaults('adhocracy_frontend:defaults.yaml')
    request.addfinalizer(testing.tearDown)
    return config

def pyramid_config():
    config = pyramid.testing.setUp()
    try:
        config.add_route("hi", "/message")
        config.add_view(hi, route_name="hi")
        yield config
    finally:
        pyramid.testing.tearDown()

def tearDown(self):
        testing.tearDown()
        del self.testapp
        del self.grids

def tearDown(self):
        testing.tearDown()

def tearDown(self):
        testing.tearDown()

def tearDown(self):
        testing.tearDown()

def tearDown(self):
        testing.tearDown()

def tearDown(self):
        testing.tearDown()

def tearDown():
    from depot.manager import DepotManager
    from kotti import events
    from kotti import security
    from kotti.message import _inject_mailer

    # These should arguable use the configurator, so they don't need
    # to be torn down separately:
    events.clear()
    security.reset()

    _inject_mailer[:] = []
    transaction.abort()
    DepotManager._clear()
    testing.tearDown()