protected internal virtual void VisitRetrieveType(RetrieveType node, object data) { throw new NodeNotSupportedException(node); }
protected internal override void VisitRetrieveType(RetrieveType node, object data) { throw new VerifierException(); //not supported yet... }
protected internal override void VisitRetrieveType(RetrieveType node, object data) { throw new EmissionException();//TODO: Not supported yet }