Enable or disable skin parts on EntityType.HUMAN

Ok, so I’m creating some small plugin with NPCs and when I try to set their skin to mine, it changes, but it doesn’t set the “helmet” part of the skin
eg.


Is there a way to enable and disable those parts of the skin?

I just looked in the API, for a Player there is getDisplayedSkinParts but for an Human it looks like there is nothing in the API currently. You can ask for an addition in the API here: Issues · SpongePowered/SpongeAPI · GitHub .