public async Task GetEventsAsync(string actorName, long indexStart, long indexEnd, Action <object> callback)
{
var sort = Builders <Event> .Sort.Ascending("eventIndex");
var events = await EventCollection
.Find(e => e.ActorName == actorName && e.EventIndex >= indexStart && e.EventIndex <= indexEnd)
.Sort(sort)
.ToListAsync();
foreach (var @event in events)
{
callback(@event.Data);
}
}