How to update old CompoundTag to new or how to register the recipie?

I don't understand how working the new CompoundTag..
(btw I understan only old CompoundTag)

Console error message:

PHP:

            $tag = new CompoundTag("", [
                new ListTag("Recipes", []),
            ]);
            $recipes = [[Item::get(Item::BRICK, 0, 1), Item::get(Item::SANDSTONE, 2, 2)], [Item::get(Item::BRICK, 0, 7), Item::get(Item::END_STONE, 0, 1)]];
            $this->recipes[$p->getName()] = $recipes;
            $i = 0;
            foreach($recipes as $recipe){
                $tag->Recipes[$i] = $this->makeRecipe($recipe[0], $recipe[1], $recipe[2] ?? null);
                ++$i;
            }
            $nbt = new NBT;
            $nbt->setData($tag);

 

Im just bumping this. I want to know how to update CompoundTag

 

This thread can explain it
https://forums.pmmp.io/threads/adapting-old-code-using-compoundtags-since-api-3-0-0-alpha12.5975/

 

But i don't understand oof

 

can I ask for an example? Because i don't understand this code/tutorial xd

 

There is in that link