Discord.Interactions.ChoiceDisplayAttribute isn't available

[EndGameGl]

It's stated in here that in order to specify enum display names, I must use ChoiceDisplayAttribute
https://labs.discordnet.dev/guides/int_framework/intro.html https://github.com/Discord-Net-Labs/Discord.Net-Labs/blob/release/3.x/src/Discord.Net.Interactions/Attributes/EnumChoiceAttribute.cs https://labs.discordnet.dev/api/Discord.Interactions.ChoiceDisplayAttribute.html
However, in the latest version available (3.6.1), this attribute is missing.