public static THub CreateHub <THub, TClient, TMulti>(this MultiHubBase <TMulti> src)
     where TMulti : class
     where TClient : class
     where THub : Hub <TClient>
 {
     return((THub)CreateHubHelper <THub, TClient, TMulti> .CreateHub(src, src));
 }
 public static Hub CreateHub <TMulti>(this MultiHubBase <TMulti> src, Type hub)
     where TMulti : class
 {
     return(CreateHubHelper <TMulti> .CreateHub(hub)(src, src));
 }