Issue Description:

Is it possible to make creature can despawn? For parrots, rabbits etc.
For Minecraft 1.12.2

Yes... there is a PROTECTED method in forge, doesn't help me understand what you want...

wat. this makes no sense.

Why? If I use OTG generation with mob spawn settings and set parrots into embients. I need this feature.

I don't even know what you are asking.

https://takahikokawasaki.github.io/minecraft-resources/javadoc/forge/1.8-11.14.1.1320/net/minecraft/entity/EntityLiving.html#canDespawn()
Method exists in latest Forge 1.12.2 too

I apologize for the misunderstanding. Can I allow animals like Parrots, Rabbits etc to despawn from CraftTweaker scripts? I need this in order for the emerging custom environment animals to disappear and appear again and don't load the server with their huge amount. Is it possible? It would be so cool to have such an opportunity without having to install additional tools to control the spawn

OpenTerrainGenerator allows you to specify lists of environment mobs in a particular biome, but mobs that can not despawn remain in the biome forever. And to them there are more and more new.

That makes more sense...

Oh thanks!

On further investigation, there isn't a "setCanDespawn" or anything of the like, so there is nothing I can do. sorry :(

Very sorry. Thank you very much for trying.