How would I make my block a fuel item?

[DroidCrafter23]

I am wanting my block to be used as fuel but I am not sure how. How would I do this? 

Here is my code for reference:

    public static final RegistryObject<Block> BLOCK_OF_FIREWOOD = registerBlock("block_of_firewood",
            () -> new Block(BlockBehaviour.Properties.copy(Blocks.STRIPPED_OAK_LOG)));

    private static <T extends Block> RegistryObject<T> registerBlock(String name, Supplier<T> block) {
        RegistryObject<T> toReturn = BLOCKS.register(name, block);
        registerBlockItem(name, toReturn);
        return toReturn;
    }

The YouTube video I was following:

 

[r_solar]