vertx / io.vertx.reactivex.redis / RedisTransaction / pubsubNumsub

# pubsubNumsub

`open fun pubsubNumsub(channels: MutableList<String>, handler: Handler<AsyncResult<String>>): RedisTransaction`

Returns the number of subscribers (not counting clients subscribed to patterns) for the specified channels

### Parameters

`channels` - List of channels

`handler` - Handler for the result of this call.

Return