'Verifies unset_bookmarked returns Bool as expected.'

def test_unset_bookmarked(self):

    with self.assertNumQueries(1):
        self.assertFalse(self.bookmark_service.unset_bookmarked(usage_key=UsageKey.from_string('i4x://ed/ed/ed/interactive')))
    with self.assertNumQueries(3):
        self.assertTrue(self.bookmark_service.unset_bookmarked(usage_key=self.sequential_1.location))
