Can I preload a .csb file? like i this example for TextureCache

auto TexureCache = Director::getInstance()->getTextureCache();
    TexureCache->addImageAsync("MainMenuScreen/Background.png", CC_CALLBACK_1(GS_Loading::LoadingCallback, this));

And this one for Music?

    auto audio = CocosDenshion::SimpleAudioEngine::getInstance();
    audio->preloadBackgroundMusic(AUDIO_STAGE_1);

this is the normal way to load a .csb fle

auto node = CSLoader::createNode("CS_MainMenu/MainScene.csb");
    addChild(node);

Because a .csb file have multiple Scenes and Layer Button, and all the sprite on it etc.