def METHOD_NAME(self, prefix: str, identifier: str):
    """Assert the URL resolves."""
    url = bioregistry.get_identifiers_org_iri(prefix, identifier)
    self.assertIsNotNone(url)
    res = self.session.get(url, allow_redirects=False)
    self.assertEqual(302, res.status_code, msg=f"failed with URL: {url}")