public class CoolDownStorage implements Capability.IStorage<ICoolDown>
{
    @Override
    public INBT writeNBT(Capability<ICoolDown> capability, ICoolDown instance, Direction side) {
        return null;
    }

    @Override
    public void readNBT(Capability<ICoolDown> capability, ICoolDown instance, Direction side, INBT nbt) {

    }
}