c++
public static SpriteSheet? LoadSpriteSheet(string fileName, string folder, GameRenderer renderer){
    var json = File.ReadAllText(Path.Combine(folder, fileName));
    var spriteSheet = JsonSerializer.Deserialize<SpriteSheet>(json, new JsonSerializerOptions() { PropertyNameCaseInsensitive = true });
    if(spriteSheet != null){
        spriteSheet.LoadTexture(renderer, folder);
    }
    return spriteSheet;
}

c++
public static SpriteSheet? LoadSpriteSheet(string fileName, string folder, GameRenderer renderer){
    var json = File.ReadAllText(Path.Combine(folder, fileName));
    var spriteSheet = JsonSerializer.Deserialize<SpriteSheet>(json, new JsonSerializerOptions() { PropertyNameCaseInsensitive = true });
    if(spriteSheet != null){
        spriteSheet.LoadTexture(renderer, folder);
    }
    return spriteSheet;
}