public void test_parseJwtClaim_numericValues() throws IOException {
        final String jwtClaim = "{\"iat\":1609459200,\"exp\":1609462800,\"nbf\":1609459200}";
        final Map<String, Object> attributes = new HashMap<>();

        authenticator.parseJwtClaim(jwtClaim, attributes);

        assertEquals(1609459200L, attributes.get("iat"));
        assertEquals(1609462800L, attributes.get("exp"));