Draco18s

Your cauldron handle does not need a voxel boundary. Its basically irrelevant.

GOSH MAYBE THERE'S A METHOD CALLED "getPrivateValue" IN THE CLASS. HAVE YOU TRIED READING THE AVAILABLE METHODS?

Call its methods? They're intelligently named.

You do it the same way you use the Math class to get the value of Pi.

Look for implementations of IPlacementConfig and the constructors thereof.

And what's the error?

Under the assumption that your condition is only ever true for witches (I haven't messed with entity predicates, so I am not sure that your condition is actually what you want) the "alter this section" is very easy: @Nonnull @Override public List<ItemStack> doApply(List<ItemStack> generatedLoot, LootContext context) { generatedLoot.add(new ItemStack(dust, 1)); return generatedLoot; } You would have a field for the dust that you would deserialize to (look at how the reward field is deserialized) and would not need the other two fields at all.

Because the company has decided that it likes people like you (because people like you generate page views and ad clicks) despite the fact that people like you never actually get your question answered because it's garbage content (duplicate, poorly explained, spam, whatever). I'll let this meta-answer explain. https://meta.stackexchange.com/a/355674

Look at: Bed Torch Door Pressure Plate A thousand other vanilla blocks

You do realize that that is the entire point of StackOverflow, right? It's not a "I need halp, solve my problem for me" site, it's an encyclopedia. (Conversely, this is a forum, which is a "I need help" site).

Look for biome.addFeature or similar, then.

Ore Gen is done with json now.

I haven't messed with it, I only know that it exists.

It depends on the use-case