col = certFactorySpi.engineGenerateCRLs(dis);
assertNull("Result must be null", col);
List list = null;
certFactorySpi.engineGenerateCertPath(list);
Iterator enc = certFactorySpi.engineGetCertPathEncodings();
assertFalse("Incorrect Iterator", enc.hasNext());
}
private static class extCertificateFactorySpi extends CertificateFactorySpi {