How to use the workflows.utils function in workflows

def test_get_objects_for_workflow_2(self):
        """Workflow is added to content type.
        """
        result = workflows.utils.get_objects_for_workflow(self.w)
        self.assertEqual(result, [])

        ctype = ContentType.objects.get_for_model(self.user)
        workflows.utils.set_workflow(ctype, self.w)
        result = workflows.utils.get_objects_for_workflow(self.w)
        self.assertEqual(result, [self.user])

def test_remove_workflow_from_object(self):
        """
        """
        result = workflows.utils.get_workflow(self.user)
        self.assertEqual(result, None)

        workflows.utils.set_workflow_for_object(self.user, self.w)

        result = workflows.utils.get_workflow(self.user)
        self.assertEqual(result, self.w)

        result = workflows.utils.remove_workflow_from_object(self.user)
        self.assertEqual(result, None)

def test_get_objects_for_workflow_2(self):
        """Workflow is added to content type.
        """
        result = workflows.utils.get_objects_for_workflow(self.w)
        self.assertEqual(result, [])

        ctype = ContentType.objects.get_for_model(self.user)
        workflows.utils.set_workflow(ctype, self.w)
        result = workflows.utils.get_objects_for_workflow(self.w)
        self.assertEqual(result, [self.user])

def test_set_initial_state(self):
        """
        """
        state = workflows.utils.get_state(self.page_1)
        self.assertEqual(state.name, self.private.name)

        workflows.utils.do_transition(self.page_1, self.make_public, self.user)
        state = workflows.utils.get_state(self.page_1)
        self.assertEqual(state.name, self.public.name)

        workflows.utils.set_initial_state(self.page_1)
        state = workflows.utils.get_state(self.page_1)
        self.assertEqual(state.name, self.private.name)