This member is added by an implicit conversion from RedeliverFailure to
any2stringadd[RedeliverFailure] performed by method any2stringadd in scala.Predef.
This member is added by an implicit conversion from RedeliverFailure to
StringFormat[RedeliverFailure] performed by method StringFormat in scala.Predef.
Notification message to inform channel listeners about messages that have reached the maximum number of redeliveries.
(Since version 2.3.4) Channel will be removed, see
akka.persistence.AtLeastOnceDelivery
instead.