in src/main/scala/com/gu/flexible/snapshotter/logic/ApiLogic.scala [25:29]
def contentModifiedSince(since: DateTime)(implicit ws:StandaloneWSClient, config:CommonConfig, context:ExecutionContext): Attempt[JsValue] = {
val request = ws.url(config.contentUri).withQueryStringParameters(("since", since.getMillis.toString))
log.info(s"Requesting since $since - converted to ${since.getMillis}")
jsonOnOKStatus(request)
}