Reflection with custom entity class?

hello. is there any way how I could make my custom entity class with reflection for multiple bukkit versions?
As of right now I have to extend EntityZombie class which is NMS's class file.

Code (Text):

package net.iconbyte.npc;

import org.bukkit.Location;
import org.bukkit.craftbukkit.v1_9_R2.CraftWorld;
import org.bukkit.craftbukkit.v1_9_R2.entity.CraftGuardian;
import org.bukkit.craftbukkit.v1_9_R2.entity.CraftLivingEntity;
import org.bukkit.entity.Zombie;
import org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason;

import net.minecraft.server.v1_9_R2.DamageSource;
import net.minecraft.server.v1_9_R2.EntityGuardian;
import net.minecraft.server.v1_9_R2.NBTTagCompound;

public class ZombieNPC extends EntityZombie { <--- This extension with reflection...?
    public ZombieNPC(CraftWorld world) {
        super(world.getHandle());
    }

    @Override
    public boolean damageEntity(DamageSource damagesource, float f) {
        return false;
    }

    @Override
    public void g(double d0, double d1,double d2) {
        return;
    }

    @Override
    public void move(double d0, double d1,double d2) {
        return;
    }

    public static Zombie spawnZombie(Location loc) {
        CraftWorld mcWorld = ((CraftWorld) loc.getWorld());
        ZombieNPC customEntity = new ZombieNPC(mcWorld);
        customEntity.setLocation(loc.getX(), loc.getY(), loc.getZ(), loc.getYaw(), loc.getPitch());
        ((CraftLivingEntity) customEntity.getBukkitEntity()).setRemoveWhenFarAway(false);
        mcWorld.getHandle().addEntity(customEntity, SpawnReason.CUSTOM);
        removeSounds(customEntity);
        removeAI(customEntity);
        return (CraftZombie) customEntity.getBukkitEntity();
    }

    private static void removeSounds(ZombieNPC customEntity) {
        CraftZombie craftEntity = ((CraftZombie) customEntity.getBukkitEntity());
        NBTTagCompound nbtTag = new NBTTagCompound();
        craftEntity.getHandle().c(nbtTag);
        nbtTag.setInt("Silent", 1);
        craftEntity.getHandle().f(nbtTag);
    }

    private static void removeAI(ZombieNPC customEntity) {
        CraftZombie craftEntity = ((CraftZombie) customEntity.getBukkitEntity());
        NBTTagCompound nbtTag = new NBTTagCompound();
        craftEntity.getHandle().c(nbtTag);
        nbtTag.setInt("NoAI", 1);
        craftEntity.getHandle().f(nbtTag);
    }
}

 

Sorry for replying so late, but do you mean creating a list as creating multiple class files for each version, and then using the correct class by the server's spigot version?