Question Cannot resolve symbol 'ItemGroupEvents'

[xiaoliuprogramer]

I was trying to adding an item to Item Groups, here is code:

package name.myfirstmod;

import name.myfirstmod.registry.ModItems;
import net.fabricmc.api.ModInitializer;

import net.fabricmc.fabric.impl.item.group.ItemGroupExtensions;
import net.minecraft.item.ItemGroup;
import net.minecraft.item.Items;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import static name.myfirstmod.registry.ModItems.SUSPICIOUS_SUBSTANCE;

@Override
    public void onInitialize() {
        ItemGroupEvents.modifyEntriesEvent(ItemGroup.BUILDING_BLOCKS).register(content -> {
            content.addAfter(Items.OAK_DOOR,SUSPICIOUS_SUBSTANCE);
        });

        LOGGER.info("Hello Fabric world!");
        ModItems.initialize();
    }

However, IDEA indicates some bugs:





Environment details:

• Minecraft version: 1.18.1
• Fabric Loader version: 0.16.3

Why cannot resolve symbol 'ItemGroupEvents'?And how to solve the problem?​

Thank you very much for your assistance!

 

[stefvanschie]

This forum is for questions regarding Paper, not for development questions about Fabric. For Fabric questions, you should consult the Fabric Discord guild.

 

[xiaoliuprogramer]

Oh, I'm sorry, I got mixed up.