if (thisJoinPointVar != null) { callback.append(BcelRenderer.renderExpr(fact, world, thisJoinPointVar)); }
    InstructionList makeCallToCallback(LazyMethodGen callbackMethod) {    	InstructionFactory fact = getFactory();        InstructionList callback = new InstructionList();        if (targetVar != null) {            callback.append(BcelRenderer.renderExpr(fact, world, targetVar));        }        callback.append(BcelRenderer.renderExprs(fact, world, argVars));        callback.append(Utility.createInvoke(fact, callbackMethod));        return callback;    }