for (final ContentReference cr : signableObject.getSignature().getContentReferences()) { if (cr instanceof SAMLObjectContentReference) { final List<String> transforms = ((SAMLObjectContentReference)cr).getTransforms(); if (transforms.contains(SignatureConstants.TRANSFORM_C14N_EXCL_WITH_COMMENTS) || transforms.contains(SignatureConstants.TRANSFORM_C14N_EXCL_OMIT_COMMENTS)) {