protected override void OnUnregister()
{
base.OnUnregister();
ContractConfigurator.OnParameterChange.Remove(new EventData <Contract, ContractParameter> .OnEvent(OnParameterStateChange));
foreach (ContractBehaviour behaviour in behaviours)
{
behaviour.Unregister();
}
GameEvents.onVesselChange.Remove(new EventData <Vessel> .OnEvent(OnVesselChange));
OnStateChange.Remove(new EventData <State> .OnEvent(SelfStateChanged));
}