public WorldState Apply(WorldState initialState)
{
return(Effects.Aggregate(initialState, (soFar, effect) => effect.ApplyTo(soFar)));
}
public bool IsAvailableIn(WorldState worldState)
{
return(Preconditions.Aggregate(true,
(soFar, precondition) => soFar && precondition.IsSatisfiedBy(worldState)));
}