/// <summary>
/// Check if all pre-conditions are fulfilled
/// </summary>
protected bool CheckPreConditions(TSource source)
{
return((PreConditionFuncs.Count == 0) || PreConditionFuncs.All(c => c.Invoke(source)));
}
/// <summary>
/// Add a pre-conditions executed before a value will be resolved
/// </summary>
public void AddPreCondition(Func <TSource, bool> conditionFunc)
{
PreConditionFuncs.Add(conditionFunc);
}
