/// <summary>
/// Generates an error message for feedback, and adds it to the dictionary.
/// </summary>
/// <typeparam name="ServiceDictionaryKey"></typeparam>
/// <param name="key">Key to add it under.</param>
/// <param name="ex">Exception.</param>
/// <param name="feedbackHandler">IFeedbackHandler for processing the error into an error message.</param>
public static void AddErrorMessage <ServiceDictionaryKey>(this Dictionary <ServiceDictionaryKey, object> dictionary,
ServiceDictionaryKey key,
Exception ex,
IMessageHandler feedbackHandler)
{
string callbackMessage = feedbackHandler.BuildErrorMessage(ex);
dictionary.Add(key, callbackMessage);
}
