function buyPackage():Promise<String>
    {
        /**
            var transaction = _buyPackage(model.packageId);
            transaction.handle(function(v:Outcome<String, Error>) {
                // TODO: Bad way for calling strategy. Proper way is rework BuyCreditAlertFinishAdapterStrategyMacro and all mactro/comands which using in it, and after it use @Map
                var m = new CommandMapping(BuyCreditAlertFinishAdapterStrategyMacro);
                new CommandExecutor(injector, module).executeCommand(m);
            });
            return transaction;
         */
        var transaction = _buyPackage(model.packageId);

        transaction.flatMap(function(v:Outcome<String, Error>) {
            switch(v){
                case Outcome.Success(result):
                    return Future.async( function(trigger) {
                        var m = new CommandMapping(BuyCreditAlertFinishAdapterStrategyMacro);
                        m.withCompleteHandler(function(command:IAsyncCommand){
                            trigger(Outcome.Success(result));
                        });
                        m.withFailHandler(function(command:IAsyncCommand){
                            trigger(Outcome.Failure(new Error("Macro failed BuyCreditAlertFinishAdapterStrategyMacro")));
                        });
                        new CommandExecutor(injector, module).executeCommand(m);
                    };
                case Outcome.Failure(error):
                    return Future.sync(v);
            }
        });
        return transaction;
    }