title: Why "Nearby Message" does not subscribe to Beacon Message
body: <p>Nearby Message API Does not subscribe to Beacon Message. What am I supposed to do?</p>
  
  <p>I finished testing whether "Nearby Message" works in Android 7.0 and Android 9.0. And I referenced this document(<a href="https://developers.google.com/nearby/messages/android/get-beacon-messages" rel="nofollow noreferrer">https://developers.google.com/nearby/messages/android/get-beacon-messages</a>) but, it is still not working.</p>
  
  <pre><code>listener = object: MessageListener() {
      override fun onFound(msg: Message) {
          Log.i(TAG, "Found: $msg")
      }
  
      override fun onLost(msg: Message) {
          Log.i(TAG, "Lost: $msg")
      }
  }
  
  
  val options = SubscribeOptions.Builder()
      .setStrategy(Strategy.BLE_ONLY)
      .build()
  Nearby.getMessagesClient(this).subscribe(listener, options)
  </code></pre>
  
  <p>Nearby Message is subscribed to, but beacon message is not.</p>