Banana Bane

I am trying to update my clientside mod to 1.20.4, however there seems to be some issue with the sides aspect. ModLoadingContext.get().registerExtensionPoint(IExtensionPoint.DisplayTest.class, () -> new IExtensionPoint.DisplayTest(() -> NetworkConstants.IGNORESERVERONLY, (a, b) -> true)); According to the documentation, this code is correct, however it does not compile. Multiple markers at this line -NetworkConstants cannot be resolved to a variable -The constructor IExtensionPoint.DisplayTest(() -> {}, (<no type> a, <no type> b) => {}) is undefined The import net.minecraftforge.network.NetworkConstants cannot be resolved How do I make a 1.20.4 mod clientside only?