This Is How Commoble Registers Things in Forge for Minecraft

Registration.java

/**
 * Helper class that we use to register things
 */
public class Registrator<T extends IForgeRegistryEntry<T>>
{
	public IForgeRegistry<T> registry;
	
	public Registrator(IForgeRegistry<T> registry)
	{
		this.registry = registry;
	}
	
	public T register(String registryKey, T entry)
	{
		entry.setRegistryName(new ResourceLocation(DungeonFist.MODID, registryKey));
		registry.register(entry);
		return entry;
	}
}

/**
 * In this class we keep all of the MOD events that fire during init for both sides,
 * particularly registry events
 */
@EventBusSubscriber(modid = DungeonFist.MODID, bus = Bus.MOD)
public class CommonModEventHandler
{
	@SubscribeEvent
	public static void onBlockRegistryEvent(RegistryEvent.Register<Block> event)
	{
		BlockRegistrar.registerBlocks(getRegistrator(event));
	}
	
	public static <T extends IForgeRegistryEntry<T>> Registrator<T> getRegistrator(RegistryEvent.Register<T> event)
	{
		return new Registrator<T>(event.getRegistry());
	}
}

/**
 * Class for registering blocks and holding their references
 */
@ObjectHolder(DungeonFist.MODID)
public class BlockRegistrar
{	
	@ObjectHolder(DungeonFist.DUNGEON_PORTAL)
	public static final Block DUNGEON_PORTAL = null;
	@ObjectHolder(DungeonFist.DUNGEON_PORTAL_GLOWY_AIR)
	public static final Block DUNGEON_PORTAL_GLOWY_AIR = null;
	
	
	// register all the blocks, called by RegistryEventHandler
	public static void registerBlocks(Registrator<Block> reg)
	{
		reg.register(DungeonFist.DUNGEON_PORTAL, new DungeonPortalBlock(Block.Properties.create(Material.PORTAL).doesNotBlockMovement().hardnessAndResistance(-1.0F).sound(SoundType.GLASS).lightValue(11).noDrops()));
		reg.register(DungeonFist.DUNGEON_PORTAL_GLOWY_AIR, new DungeonPortalGlowyAirBlock(Block.Properties.create(Material.PORTAL).doesNotBlockMovement().hardnessAndResistance(-1.0F).sound(SoundType.GLASS).lightValue(11).noDrops()));
	}
}

// including this to make it more obvious that I'm using strings in places
@Mod(DungeonFist.MODID)
public class DungeonFist
{
	public static final String MODID = "dungeonfist";
	
	// object names
	public static final String DUNGEON = "dungeon";
	public static final String DUNGEON_PORTAL = "dungeon_portal";
	public static final String DUNGEON_PORTAL_GLOWY_AIR = "dungeon_portal_glowy_air";
}

That's really nice But very complicated