case msg @ UpdateKeywordsConf(kwConfig) ⇒
        log.warning("Update keywords config: {}", kwConfig)
        keywordsConf = Some(kwConfig)

        unstashAll()
        context.system.eventStream.publish(msg)
....
....
....
override def preStart() {
      context.become({
        case kw: KeywordsConfig ⇒
          updateKeywords(kw)

          context.unbecome()
          unstashAll()

          context.system.eventStream.subscribe(self, classOf[UpdateKeywordsConf])

        case _ ⇒ stash()
      })