in src/main/scala/org/apache/pekko/persistence/dynamodb/journal/DynamoDBHelper.scala [139:150]
def desc(t: T): String
protected def formatKey(i: Item): String = {
val key = i.get(Key) match {
case null => "<none>"
case x => x.getS
}
val sort = i.get(Sort) match {
case null => "<none>"
case x => x.getN
}
s"[$Key=$key,$Sort=$sort]"
}