DigestAlgAndValueType certDigest = (DigestAlgAndValueType)xoList[0];
assertNotNull(certDigest.getDigestValue());
String qualPropXQuery = declareNS +
"$this/ds:Signature/ds:Object/xades:QualifyingProperties";
xoList = sigDoc.selectPath(qualPropXQuery);
assertEquals(xoList.length, 1);
QualifyingPropertiesType qualProp = (QualifyingPropertiesType)xoList[0];
boolean qualPropXsdOk = qualProp.validate();
assertTrue(qualPropXsdOk);