String comment = source.getComment();
dest.setComment(comment);
// Set statement relationship, if present on source
Relationship r = source.getRelationship();
if (r != null)
dest.setRelationshipType(fromString(r.value()));
XBELObject object = source.getObject();
if (object != null) {
if (object.isSetStatement()) {
XBELStatement statement = object.getStatement();