public override void Evaluate(ComputationContext ctx)
{
if (this.Evaluation == null)
{
this.Evaluation = ctx.Env.UnitEvaluation;
NameReference req_typename = NameFactory.PointerNameReference(NameFactory.ExceptionNameReference());
IEntityInstance eval_typename = req_typename.Evaluated(ctx, EvaluationCall.AdHocCrossJump);
this.DataTransfer(ctx, ref this.expr, eval_typename);
}
}