minecraft 1.10 mod conversion issue

//item registry
public class ModItems {

	public static Item Essence;
	public static Item RiftTome;
	public static Item RiftReader;

	public static void init() {
		Essence = new Essence();
		RiftTome = new RiftTome();
		RiftReader = new RiftReader();
	}

	public static void register() {
		GameRegistry.register(Essence);
		GameRegistry.register(RiftTome);
		GameRegistry.register(RiftReader);
	}

	public static void renders() {
		registerRender(Essence);
		registerRender(RiftTome);
		registerRender(RiftReader);
	}

	private static void registerRender(Item item) {
		Minecraft.getMinecraft().getRenderItem().getItemModelMesher().register(item, 0, new ModelResourceLocation("MagicRifts:"+item.getUnlocalizedName().substring(5), "inventory"));
		//System.out.println("MagicRifts:"+item.getUnlocalizedName().substring(5));
	}

}

//all item classes are near-identical, I will provide one.

public class Essence extends Item {

	public Essence() {
		setUnlocalizedName("Essence");
		setRegistryName("Essence");
	}

}

//interface for server and client

public interface CommonProxy {

	public void init();

}

/client init

public class ClientProxy implements CommonProxy {

	@Override
	public void init() {
		ModItems.renders();
	}

}

//main

@Mod(modid = MagicRifts.MODID, version = MagicRifts.VERSION)
public class MagicRifts {
	public static final String MODID = "magicrifts";
	public static final String VERSION = "0.0";
	public static final String CLIENT_PROXY_CLASS = "com.zane49er.MagicRifts.proxy.ClientProxy";
	public static final String SERVER_PROXY_CLASS = "com.zane49er.MagicRifts.proxy.ServerProxy";

	@Instance
	public static MagicRifts instance;

	@SidedProxy(clientSide = CLIENT_PROXY_CLASS, serverSide = SERVER_PROXY_CLASS)
	public static CommonProxy proxy;

	@EventHandler
	public void preInit(FMLPreInitializationEvent event) {
		ModItems.init();
		ModItems.register();
	}

	@EventHandler
	public void init(FMLInitializationEvent event) {

	}

	@EventHandler
	public void postInit(FMLPostInitializationEvent event) {

	}
}