public R Execute(OptionOccurrence oo)
{
oo.State = SolutionSpace.OptionState.Chosen;
Repo.PropagateChanges(oo);
(from po in oo.AssociatedProblemOccurrences(Repo.GetElement)
from otherOo in po.Alternatives(Repo.GetElement)
where !oo.Equals(otherOo)
select otherOo).ForEach(otherOo =>
{
if (otherOo.State != SolutionSpace.OptionState.Chosen && otherOo.State != SolutionSpace.OptionState.Neglected)
{
otherOo.State = SolutionSpace.OptionState.Neglected;
Repo.PropagateChanges(otherOo);
}
});
return(UpdateProblemOccurrenceState.Execute(oo));
}