@Override
public boolean matches(InventoryCrafting inventoryCrafting, World world) {
    ItemStack itemStack = null;
    ItemStack itemStack1 = null;

    for (int i = 0; i < inventoryCrafting.getSizeInventory(); i++) {
        ItemStack itemStack2 = inventoryCrafting.getStackInSlot(i);
        if (itemStack2 != null) {
            if (itemStack2.getItem() == ModItems.itemSaw) {
                itemStack = itemStack2;
            }
        }
   }

    return itemStack != null;
}