equivalent-exchange-3/src/main/java/com/pahimar/ee3/util/EntityHelper.java

package com.pahimar.ee3.util;

import com.pahimar.ee3.reference.Reference;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.monster.IMob;
import net.minecraft.nbt.NBTTagCompound;

public class EntityHelper
{
    public static NBTTagCompound getCustomEntityData(Entity entity)
    {
        if (entity != null && entity.getEntityData().hasKey(Reference.LOWERCASE_MOD_ID) && entity.getEntityData().getTag(Reference.LOWERCASE_MOD_ID) instanceof NBTTagCompound)
        {
            return entity.getEntityData().getCompoundTag(Reference.LOWERCASE_MOD_ID);
        }

        return new NBTTagCompound();
    }

    public static void saveCustomEntityData(Entity entity, NBTTagCompound nbtTagCompound)
    {
        if (entity != null)
        {
            entity.getEntityData().setTag(Reference.LOWERCASE_MOD_ID, nbtTagCompound);
        }
    }

    public static boolean isHostileEntity(final EntityLivingBase entity) {
        return entity instanceof IMob;
    }
}