[1.20.1] How do I access the WorldBorder from an Item class?

I am hoping to make a small mod involving the WorldBorder, and I want to run a test by creating an item that when used sets the WorldBorder's center to the player's current position and shrinks it to about 16 blocks or so. My problem is that I have no idea how to access the WorldBorder from an Item class. Is it even possible to do something like this, and if so how would I go about it? Currently the best idea that I have is to somehow get the World and then use getWorldBorder(), but that seems to be from an outdated tutorial and the World class doesn't seem to be present in 1.20.1.

This is all I have at the moment for my BorderSetterItem class:

public class BorderSetterItem extends Item {
    public BorderSetterItem(Properties pProperties) {
        super(pProperties);
    }

    @Override
    public InteractionResult useOn(UseOnContext pContext) {
        if (!pContext.getLevel().isClientSide()) {
            WorldBorder worldBorder;
        }

        return InteractionResult.SUCCESS;
    }
}

I've just started getting into modding and I'm currently still going through some tutorials about the basics, but as there don't seem to be many tutorials about messing with the WorldBorder I thought it would be helpful to ask about it now. How should I go about doing this?