def METHOD_NAME(self):
    """
    Test whether the manager can modify an existing pipeline.
    """
    pipeline = Pipeline.objects.get(name=self.pipeline_name)
    initial_modification_date = pipeline.modification_date
    self.pipeline_manager.run(['modify', str(pipeline.id), '--name', 'Pipeline2'])
    pipeline = Pipeline.objects.get(pk=pipeline.id)
    self.assertTrue(pipeline.modification_date > initial_modification_date)
    self.assertEqual(pipeline.name, 'Pipeline2')