public async Task Send(AbstractHubMessage <THubMessage, TConnectionKey> message)
{
var messageJson = message.ToJson();
var connectionIds = _connections.GetConnections(message.To).ToList();
await _hubContext.Clients.Clients(connectionIds).SendAsync("Receive", messageJson);
}
public async Task Broadcast(AbstractHubMessage <THubMessage, TConnectionKey> message)
{
var messageJson = message.ToJson();
await _hubContext.Clients.All.SendAsync("Receive", messageJson);
}