[1.16.5] Client Side Only Mod - Is this good enough?

So I'm making a mod that is client side only (Which I have working, but haven't fully tested the scenario of joining a server that doesn't have this mod on it) Bur following the documentation I found under "Concepts > Sides" that we should add an specific line.

So my code now looks like this.

@Mod(ModInfo.MOD_ID)
public class RMH
{
    public RMH() {
        ModLoadingContext.get().registerExtensionPoint(ExtensionPoint.DISPLAYTEST, () -> Pair.of(() -> FMLNetworkConstants.IGNORESERVERONLY, (a, b) -> true));

        FMLJavaModLoadingContext.get().getModEventBus().addListener(this::clientSetup);
        //MinecraftForge.EVENT_BUS.register(this);
    }

    private void clientSetup(final FMLClientSetupEvent event)
    {
        ModLoadingContext.get().registerConfig(ModConfig.Type.CLIENT, ModConfigs.SPEC, "RemoveMouseoverHighlight-client.toml");
        MinecraftForge.EVENT_BUS.register(RemoveHighlight.class);
        if(ModConfigs.USE_KEY.get()){
            MinecraftForge.EVENT_BUS.register(new KeyMonitor());
            MyKeyBindings.register();
        }
    }
}

The line that I added mentioned in the documentation is ModLoadingContext.get().registerExtensionPoint(ExtensionPoint.DISPLAYTEST, () -> Pair.of(() -> FMLNetworkConstants.IGNORESERVERONLY, (a, b) -> true));

I even commented out MinecraftForge.EVENT_BUS.register(this); which I'm not sure I should... The mod still works, but for some reason it doesn't feel right.

Do I need to have anything else, or this should do it?

Edited December 15, 20213 yr by American2050
Removed the question about 1.17.1 I just needed to point my IDE to the correct version of Java