Attempting to use another vanilla model

So Im trying to add another Illager variant but my code isnt working right, what do i need to change? 
 

import net.minecraft.util.ResourceLocation;
import net.minecraft.entity.Entity;
import net.minecraft.client.renderer.entity.model.IllagerModel;
import net.minecraft.client.renderer.entity.MobRenderer;

import net.mcreator.revampage.entity.KillagerEntity;

@OnlyIn(Dist.CLIENT)
public class KillagerRenderer {
    public static class ModelRegisterHandler {
        @SubscribeEvent
        @OnlyIn(Dist.CLIENT)
        public void registerModels(ModelRegistryEvent event) {
            RenderingRegistry.registerEntityRenderingHandler(KillagerEntity.entity,
                    renderManager -> new MobRenderer(renderManager,IllagerModel(0), 0.5f) {