def append_constraint(self, constraint):

        constraint._set_parent_with_dispatch(self)
When an image is updated, change only version number, not resource id
dataset/ETHPy150Open RoseOu/flasky/venv/lib/python2.7/site-packages/sqlalchemy/sql/schema.py/Table.append_constraint--crossover with--dataset/ETHPy150Open dimagi/commcare-hq/corehq/apps/app_manager/tests/test_media_suite.py/MediaSuiteTest.test_update_image_id