OnGameLoad.cs

//gets called when the game loads using the argument gets it called before the startup scene is loaded
[RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSceneLoad)]
static void OnGameLoad()
{
    if (Current)
        Current.Configure();
    else
        throw new NullReferenceException("No Asset Instance Found, Please Make Sure An Asset Instance Exists Within A Resources Folder");
}