public ChatHistoryConsumer(IChatEventHandler eventHandler)
 {
     _eventHandler = eventHandler;
 }
 public SergenBackgroundWorker(IChatEventHandler chat, ILogger <SergenBackgroundWorker> logger)
 {
     _chat   = chat;
     _logger = logger;
 }
 public ChatHub(IChatEventHandler chatEventHandler)
 {
     _chatEventHandler = chatEventHandler;
 }
 public ChatHistoryConsumer(IChatEventHandler chateventHandler)
 {
     _chateventHandler = chateventHandler;
 }