public MessageTriggerFactory(ISendMessageActionFactory sendMessageActionFactory)
 {
     Contract.Requires<ArgumentNullException>(sendMessageActionFactory != null);
     this.sendMessageActionFactory = sendMessageActionFactory;
 }
 public MessageTriggerFactory(ISendMessageActionFactory sendMessageActionFactory)
 {
     Contract.Requires <ArgumentNullException>(sendMessageActionFactory != null);
     this.sendMessageActionFactory = sendMessageActionFactory;
 }