in src/main/scala/com/gu/fastly/CrierEventProcessor.scala [7:13]
def process(
crierEvents: Seq[Event]
)(purge: Event => Option[Decache]): Seq[Decache] = {
val successfulPurges = crierEvents.map(purge).flatten
println(s"Successfully purged ${successfulPurges.size} pieces of content")
successfulPurges
}