in src/main/scala/datastore/ElasticsearchRepo.scala [127:134]
private def identityTransform:Json=>Option[Json] = (j:Json)=>Some(j)
private def contentTransform:Json=>Option[Content] = _.as[Content] match {
case Right(content)=>Some(content)
case Left(err)=>
logger.error(s"Could not convert object from json: ", err)
None
}