public String toString() {
   String rVal = "Add ";
   String varName = "";
   String varType = "";
   DeclareVariable var = getVariable();
   if (var != null) {
     if (var.getName() != null) {
       varName = var.getName();
     }
     if (var.getType() != null) {
       varType = var.getType().toString();
     }
   }
   rVal = rVal + varType + " variable: " + varName;
   return (rVal);
 }
 public String getName() {
   if (variable != null) return variable.getName();
   else return "unknown_variable";
 }