public void Fail(IRule rule, object instance, BrokenRuleReason reason)
{
_callbacks.ForEach(c => c(rule, instance, reason));
}
/// <summary>
/// Add a reason for the <see cref="IRule"/> being broken
/// </summary>
/// <param name="reason"><see cref="BrokenRuleReason">Reason</see></param>
public void AddReason(BrokenRuleReason reason)
{
_reasons.Add(reason);
}