@Test
public void textExtractRequestInstanceIdURI() throws IOException {

    Path path = Paths.get("src/test/resources/athenz.instanceid.uri.pem");
    String pem = new String(Files.readAllBytes(path));
    X509Certificate cert = Crypto.loadX509Certificate(pem);
    assertEquals("id-001", X509CertUtils.extractRequestInstanceId(cert));
}