public FakeAuctionServer(string auctionItemId)
{
_auctionItemId = auctionItemId;
auctionChat = new XmppChatClient(new Jid(_auctionItemId, XMPP_HOST, RESOURCE), AUCTION_PASSWORD);
auctionChat.OnChatMessageReceived += (s, msg) => singleMessageListener.ProcessMessage(msg);
}