public override void Accept(MdaExprVisitor visitor)
 {
     visitor.caseNthListEltExpr(this);
 }
 public override void Accept(MdaExprVisitor visitor)
 {
     visitor.caseSubExpr(this);
 }
 public override void Accept(MdaExprVisitor visitor)
 {
     visitor.caseIndexedMapEltExpr(this);
 }
 public override void Accept(MdaExprVisitor visitor)
 {
     visitor.caseNewObjectExpr(this);
 }
 public override void Accept(MdaExprVisitor visitor)
 {
     visitor.caseIdentityExpr(this);
 }
 public override void Accept(MdaExprVisitor visitor)
 {
     visitor.casePropertyExpr(this);
 }
 public override void Accept(MdaExprVisitor visitor)
 {
     visitor.caseCtxObjectByNameExpr(this);
 }
 public override void Accept(MdaExprVisitor visitor)
 {
     visitor.caseApplyMethodExpr(this);
 }
 // public abstract override bool Equals(AbstractMdaExpr p);
 // public abstract override int GetHashCode();
 public abstract void Accept(MdaExprVisitor arg);