@SubscribeEvent
    public void onTextureStitchEvent(TextureStitchEvent.Pre event){
        TextureMap textureMap = event.getMap();

        if(textureMap == Minecraft.getMinecraft().getTextureMapBlocks()){
            TextureAtlasSprite sprite = new TextureAtlasSpriteTest("gudenau:blocks/test");
            textureMap.setTextureEntry(sprite);
        }
    }