WrapperPlayerServerWorldBorder

[abandoncaptain]

Could you add this or possibly show me where it is if it is added

[kristianvld]

This project was last updated 4 years ago and currently on Minecraft version 1.7.2. The WorldBorder feature was implemented in Minecraft 1.8.

A fork of this project seems to still be actively developed and is currently up to version 1.12.2:
https://github.com/dmulloy2/PacketWrapper