public override sealed BoundNode VisitOutVarLocalPendingInference(OutVarLocalPendingInference node)
 {
     throw ExceptionUtilities.Unreachable;
 }
 public override sealed BoundNode VisitOutVarLocalPendingInference(OutVarLocalPendingInference node)
 {
     throw ExceptionUtilities.Unreachable;
 }