I would like to make a creative tab for my mod

My issue is probably verry obvious but I dont know how to tell the item to go in the group

Here is the code:

package io.github.ClEeVEeRYT.Everlandia.ever.init;

import io.github.ClEeVEeRYT.Everlandia.Everlandia;
import net.minecraft.world.item.BlockItem;
import net.minecraft.world.item.CreativeModeTab;
import net.minecraft.world.item.Item;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.level.ItemLike;
import net.minecraftforge.registries.DeferredRegister;
import net.minecraftforge.registries.ForgeRegistries;
import net.minecraftforge.registries.RegistryObject;

public final class EverItemInit {
    private EverItemInit() {}

    public static final DeferredRegister<Item> ITEMS = DeferredRegister.create(ForgeRegistries.ITEMS, Everlandia.MODID);

    public static final RegistryObject<BlockItem> MUSH_DIRT =ITEMS.register("mush_dirt", () -> new BlockItem(EverBlockInit.MUSH_DIRT.get(), new Item.Properties().tab());

    public static class EnderGroup extends CreativeModeTab {

        public EnderGroup() {
            super("end_everlandia_tab");
        }

        @Override
        public ItemStack makeIcon() {
        return new ItemStack (EverItemInit.MUSH_DIRT.get()));
        }
    }
}

Thanks in advance

Create a new instance of your CreativeModeTab, store it in a static final Field and use this Field as parameter in Item.Properties#tab