YourSpawnerProvider.java

package com.example.spawnerprovider;

import org.bukkit.inventory.ItemStack;
import org.bukkit.plugin.Plugin;

public class YourSpawnerProvider extends SpawnerProvider {
    
    private Plugin plugin; // your plugin's main class instance
    
    @Override
    public SpawnerProvider hook(Plugin plugin) {
        this.plugin = plugin;
        return this;
    }

    @Override
    public ItemStack getSpawnerItem(String entityId, String customName) {
        // Implementation required
        return null;
    }

    @Override
    public String getSpawnerEntityId(ItemStack itemStack) {
        // Implementation required
        return null;
    }

    @Override
    public String getSpawnerEntityName(ItemStack itemStack) {
        // Implementation required
        return null;
    }
}