/// <summary>
/// SubscribeStream creates a stream subscription that allows you to read from a stream and receive future writes.
/// </summary>
/// <param name="streamId">The stream to subscribe to.</param>
/// <param name="from">The position to subscribe from.</param>
/// <param name="cancellationToken">The cancellation token to cancel the subscription.</param>
/// <returns>A stream subscription.</returns>
public IStreamSubscription SubscribeStream(string streamId, long from, CancellationToken cancellationToken = default(CancellationToken))
{
var watch = _client.SubscribeStream(new SubscribeStreamRequest
{
Database = _db,
Stream = streamId,
From = from,
Count = (uint)10, // TODO: allow specification of slice size
}, _metadata, cancellationToken: cancellationToken);
return(new StreamSubscription(watch.ResponseStream));
}