Model Generation Code (Items.java)

package com.F14M3.emeraldarmor.datagen;

import com.F14M3.emeraldarmor.Main;
import com.F14M3.emeraldarmor.setup.Register;

import net.minecraft.data.DataGenerator;
import net.minecraft.resources.ResourceLocation;
import net.minecraftforge.client.model.generators.ItemModelProvider;
import net.minecraftforge.common.data.ExistingFileHelper;

public class Items extends ItemModelProvider {

    public Items(DataGenerator generator, ExistingFileHelper existingFileHelper) {
        super(generator, Main.MODID, existingFileHelper);
    }
    @Override
    protected void registerModels() {
        singleTexture(
                Register.TestItem.get().getRegistryName().getPath(),
                new ResourceLocation("item/handheld"),
                "layer0",
                new ResourceLocation(Main.MODID, "item/pickaxe")
                );
    }
}