BlockCrafting.addMultiblockStructure(MultiblockStructureBuilder.create("test:multi1")
    .pattern("ddd", "ggg")
    .pattern("ddd", "ggg")
    .pattern("pds", "gdg")
    .center("s", Blocks.STONE)
    .whereCond("d", b => b == Blocks.DIRT)
    .where("g", Blocks.GRASS_BLOCK)
    .whereTag("p", "minecraft:planks")
    .craftingItem("minecraft:stick")
    .resultItem("2x minecraft:diamond")
    .resultItem(Item.of("minecraft:golden_sword", "{Unbreakable:1b}"))
    .build());
BlockCrafting.addMultiblockStructure(MultiblockStructureFileBuilder.create("test:multi2")
    .file("structures/filetest.nbt")
    .center(Blocks.OAK_LOG)
    .craftingItemCond(i => i == Items.STICK)
    .resultItem("100x minecraft:diamond")
    .build());
BlockCrafting.addMultiblockStructure(MultiblockStructureBuilder.create("test:multi3")
    .pattern("d", "s")
    .center("s", "minecraft:granite")
    .where("d", "minecraft:dirt")
    .craftingItemTag("forge:ingots")
    .resultItem(Item.of("minecraft:acacia_boat", 2), "minecraft:stick")
    .resultEntity("minecraft:blaze")
    .resultAction((level, pos, player) => {
        var item = player.getMainHandItem();
        player.setMainHandItem(item.copyWithCount(item.getCount() - 1));
        level.setDayTime(0);
    })
    .build());