static void Main()
{
MatrixReference dec = new MatrixReference();
string mtext;
mtext = "double";
VariableElement name = new VariableElement();
name.setText("a");
dec.settype(mtext);
dec.setvariable(name);
string d;
Element e;
d= dec.gettype();
e = (Element)dec.getvariable();
}
public abstract void VisitMatrixReference(MatrixReference element);
public override void VisitMatrixReference(MatrixReference element)
{
//throw new NotImplementedException();
}