I am trying to make a block like so 

    public static final RegistryObject<Block>SILVER_ORE = register("silver_ore", ()->
        new Block(Block.Properties.of(Material.METAL)
            .strength(3.0f, 10.0f)
            .sound(SoundType.CHAIN)
            .requiresCorrectToolForDrops()
            .harvestLevel(3)
            ));

The problem is that the function harvestLevel is undefined for BlockBehaviour.Properties. 

I have the docs open and I can see that the method is there, however its raising an error in the code

docs: (https://nekoyue.github.io/ForgeJavaDocs-NG/javadoc/1.17.1/net/minecraft/world/level/block/state/BlockBehaviour.Properties.html)

 

Anyone know why this is happening ? 

the HarvestLevel is now controlled by tags screach for it in the forum since this question has answered a few times

4 minutes ago, Luis_ST said:

the HarvestLevel is now controlled by tags screach for it in the forum since this question has answered a few times

thanks, so are those java docs already out of date then ? 

16 hours ago, glifa said:

thanks, so are those java docs already out of date then ?

you can search for it in the forum, as I have already answered this question in a few threads
you can start at this thread: