title: StackExchange.Redis: Get the count of channel subscriptions (i.e. PUBSUB NUMSUB)
body: <p>is there a way to get the number of channel subscriptions to a specific Redis channel through the StackExchange.Redis library? When interacting with Redis directly, it would work with the PUBSUB NUMSUB command (<a href="http://redis.io/commands/pubsub" rel="nofollow">http://redis.io/commands/pubsub</a>) but I don't see an equivalent call in the C# client library.</p>