public static void freezeEntity(Entity en){
         net.minecraft.server.v1_8_R3.Entity nmsEn = ((CraftEntity)en).getHandle();
         NBTTagCompound compound = new NBTTagCompound();
         nmsEn.c(compound);
         compound.setByte("NoAI", (byte) 1);
         compound.setByte("Silent", (byte) 1);
         compound.setByte("CustomNameVisible", (byte) 1);
         compound.setByte("PlayerCreated", (byte) 1);
         nmsEn.f(compound);
     }

     public static void unfreezeEntity(Entity en){
         net.minecraft.server.v1_8_R3.Entity nmsEn = ((CraftEntity) en).getHandle();
         NBTTagCompound compound = new NBTTagCompound();
         nmsEn.c(compound);
         compound.setByte("NoAI", (byte) 0);
         compound.setByte("Silent", (byte) 0);
         nmsEn.f(compound);
     }