garden_client/Assets/Script/SFS/SFSExtension/SFSExtensionManager.cs

public class SFSExtensionManager
{
    public BaseSFSExtension BaseSFSExtension;
    public PlazaRoomExtension PlazaRoomExtension;

    public SFSExtensionManager(GardenSmartFox smartFox)
    {
        BaseSFSExtension = new BaseSFSExtension(smartFox);
        PlazaRoomExtension = new PlazaRoomExtension(BaseSFSExtension);
    }
}