Config
case class Config(maxQueueSize: Int, parallelPullCount: Int, maxAckExtensionPeriod: FiniteDuration, awaitTerminatePeriod: FiniteDuration, customizeSubscriber: Option[Builder => Builder], onFailedTerminate: Throwable => Task[Unit])
trait Serializable
trait Product
trait Equals
class Object
trait Matchable
class Any