the armor is not put in its place

package net.mcreator.regiotime.item;

import net.minecraftforge.fml.relauncher.SideOnly;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.common.registry.GameRegistry;
import net.minecraftforge.common.util.EnumHelper;
import net.minecraftforge.client.model.ModelLoader;
import net.minecraftforge.client.event.ModelRegistryEvent;

import net.minecraft.util.ResourceLocation;
import net.minecraft.item.ItemStack;
import net.minecraft.item.ItemArmor;
import net.minecraft.item.Item;
import net.minecraft.inventory.EntityEquipmentSlot;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.Entity;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.client.renderer.block.model.ModelResourceLocation;
import net.minecraft.client.model.ModelRenderer;
import net.minecraft.client.model.ModelBox;
import net.minecraft.client.model.ModelBiped;
import net.minecraft.client.model.ModelBase;

import net.mcreator.regiotime.ElementsRegiotime;

@ElementsRegiotime.ModElement.Tag
public class ItemCowboy extends ElementsRegiotime.ModElement {
    @GameRegistry.ObjectHolder("regiotime:cowboyhelmet")
    public static final Item helmet = null;
    @GameRegistry.ObjectHolder("regiotime:cowboybody")
    public static final Item body = null;
    @GameRegistry.ObjectHolder("regiotime:cowboylegs")
    public static final Item legs = null;
    @GameRegistry.ObjectHolder("regiotime:cowboyboots")
    public static final Item boots = null;
    public ItemCowboy(ElementsRegiotime instance) {
        super(instance, 28);
    }

    @Override
    public void initElements() {
        ItemArmor.ArmorMaterial enuma = EnumHelper.addArmorMaterial("COWBOY", "regiotime:1", 25, new int[]{2, 5, 6, 2}, 9,
                (net.minecraft.util.SoundEvent) net.minecraft.util.SoundEvent.REGISTRY.getObject(new ResourceLocation("")), 0f);
        elements.items.add(() -> new ItemArmor(enuma, 0, EntityEquipmentSlot.HEAD) {
            @Override
            @SideOnly(Side.CLIENT)
            public ModelBiped getArmorModel(EntityLivingBase living, ItemStack stack, EntityEquipmentSlot slot, ModelBiped defaultModel) {
                ModelBiped armorModel = new ModelBiped();
                armorModel.bipedHead = new Modeltestv1().Headphone;
                armorModel.isSneak = living.isSneaking();
                armorModel.isRiding = living.isRiding();
                armorModel.isChild = living.isChild();
                return armorModel;
            }

            @Override
            public String getArmorTexture(ItemStack stack, Entity entity, EntityEquipmentSlot slot, String type) {
                return "regiotime:textures/headphone.png";
            }
        }.setUnlocalizedName("cowboyhelmet").setRegistryName("cowboyhelmet").setCreativeTab(CreativeTabs.COMBAT));
    }

    @SideOnly(Side.CLIENT)
    @Override
    public void registerModels(ModelRegistryEvent event) {
        ModelLoader.setCustomModelResourceLocation(helmet, 0, new ModelResourceLocation("regiotime:cowboyhelmet", "inventory"));
    }
    public static class Modeltestv1 extends ModelBase {
        private final ModelRenderer Headphone;
        public Modeltestv1() {
            textureWidth = 128;
            textureHeight = 128;
            Headphone = new ModelRenderer(this);
            Headphone.setRotationPoint(9.0F, -8.0F, -0.5F);
            Headphone.cubeList.add(new ModelBox(Headphone, 0, 0, -5.0F, -1.0F, 0.0F, 1, 4, 1, 0.0F, false));
            Headphone.cubeList.add(new ModelBox(Headphone, 0, 0, -14.0F, -1.0F, 0.0F, 1, 4, 1, 0.0F, false));
            Headphone.cubeList.add(new ModelBox(Headphone, 0, 0, -15.0F, 3.0F, -1.0F, 2, 3, 3, 0.0F, false));
            Headphone.cubeList.add(new ModelBox(Headphone, 0, 0, -5.0F, 3.0F, -1.0F, 2, 3, 3, 0.0F, false));
            Headphone.cubeList.add(new ModelBox(Headphone, 0, 0, -14.0F, -1.0F, 0.0F, 10, 1, 1, 0.0F, false));
        }

        @Override
        public void render(Entity entity, float f, float f1, float f2, float f3, float f4, float f5) {
            Headphone.render(f5);
        }

        public void setRotationAngle(ModelRenderer modelRenderer, float x, float y, float z) {
            modelRenderer.rotateAngleX = x;
            modelRenderer.rotateAngleY = y;
            modelRenderer.rotateAngleZ = z;
        }
    }
}