public override void GenCode(TypeBuilder tb, MethodBuilder mb, ILGenerator cg)
 {
     TypeStack typeStack = null;
     for (int i = Compiler.Types.Count - 1; i >= 0; i--)
     {
         if (Compiler.Types[i].name == baseType)//busco el tipo base para hacer el alias( esta en el scope
         {
             Type type = null;
             type = Compiler.Types[i].type;
             typeStack = new TypeStack(Id, type, Compiler.Types[i].typeArray);
             Compiler.Types.Add(typeStack);
             break;
         }
     }
 }