public class CoolDownProvider implements ICapabilitySerializable<CompoundNBT>
{

    private final DefaultCoolDownCapability ticksIn = new DefaultCoolDownCapability();
    private final LazyOptional<ICoolDown> ticksInOptional = LazyOptional.of(() -> ticksIn);

    public void invalidate() { ticksInOptional.invalidate(); }

    @Nullable
    @Override
    public <T> LazyOptional<T> getCapability( Capability<T> cap, Direction side) {
        return ticksInOptional.cast();
    }

    @Override
    public CompoundNBT serializeNBT() {
        if(CoolDownCapability.COOLDOWN_CAPABILITY == null)
            return new CompoundNBT();
        else
            return (CompoundNBT) CoolDownCapability.COOLDOWN_CAPABILITY.writeNBT(ticksIn, null);
    }

    @Override
    public void deserializeNBT(CompoundNBT nbt) {
        if(CoolDownCapability.COOLDOWN_CAPABILITY != null)
            CoolDownCapability.COOLDOWN_CAPABILITY.readNBT(ticksIn, null, nbt);
    }
}