def get_package_url(cls, package, session=None, silent=False):
        response = get("{}/packages/{}".format(cls.bower_base_uri, package))
        return response.json().get("url", None)
def test_execute(self):
        opt = Optional(None, execute=dict)
        self.assertEqual(deoption(opt), {})
        self.assertEqual(deoption(opt, execute=dict), {})
        self.assertEqual(deoption(None, execute=dict), {})