def METHOD_NAME(self) -> None:
    self.get_success(self.store.create_profile(self.u_frank))
    self.get_success(
        self.store.set_profile_avatar_url(self.u_frank, "http://my.site/here")
    )
    self.assertEqual(
        "http://my.site/here",
        (self.get_success(self.store.get_profile_avatar_url(self.u_frank))),
    )
    # test set to None
    self.get_success(self.store.set_profile_avatar_url(self.u_frank, None))
    self.assertIsNone(
        self.get_success(self.store.get_profile_avatar_url(self.u_frank))
    )