1.12.2 no more substitution aliases?

[Zacomat]

I cannot figure out how to use substitution aliases in 1.12.2.

In 1.11 in the register items event i used 

@SubscribeEvent
public void onRegisterItem(RegistryEvent.Register<Item> event) {
	try {
		GameRegistry.addSubstitutionAlias("minecraft:compass", GameRegistry.Type.ITEM, GiacomosTeleport.myCompass);
		GameRegistry.addSubstitutionAlias("minecraft:map", GameRegistry.Type.ITEM, GiacomosTeleport.myEmptyMap);
		GameRegistry.addSubstitutionAlias("minecraft:filled_map", GameRegistry.Type.ITEM, GiacomosTeleport.myFilledyMap);
	} catch (ExistingSubstitutionException e) {
		e.printStackTrace();
	}
}

But in 1.12 how can it be done?

thx for help

[Zacomat]

Do i have to provide models and textures even if they are equals to original ones or there is a way to replace only items as before?

[Zacomat]

52 minutes ago, diesieben07 said:

Substitution aliases do not exist in 1.12.x, you can simply register a registry element with the same name.

What is the name?

Should i use 

public static final Item myCompass = new ItemMyCompass().setRegistryName("minecraft:compass").setUnlocalizedName("compass").setCreativeTab(CreativeTabs.MISC);

[Zacomat]

Thx! Now all work! But there are 2 things:

1) In the output the server warn:  Dangerous alternative prefix `minecraft` for name `compass` ...

2) I had to make the entry  "item.item.compass.name=Compass" in the lang file

[Draco18s]

9 hours ago, Zacomat said:

Thx! Now all work! But there are 2 things:

1) In the output the server warn:  Dangerous alternative prefix `minecraft` for name `compass` ...

Unfixable.

9 hours ago, Zacomat said:

2) I had to make the entry  "item.item.compass.name=Compass" in the lang file

You shouldn't have to, and it's because you've set its unlocalized name wrong. See how it says "item.item"?