title: Hangout chat to a bot doesn't post the message to pub/sub
body: <p>I followed the steps in <a href="https://developers.google.com/hangouts/chat/how-tos/bots-publish" rel="nofollow noreferrer">https://developers.google.com/hangouts/chat/how-tos/bots-publish</a></p>
  
  <p>If I post to a topic through google console 
  it received in java code for subscriber <a href="https://console.cloud.google.com/cloudpubsub/topics/" rel="nofollow noreferrer">https://console.cloud.google.com/cloudpubsub/topics/</a></p>
  
  <p>But chatting with the bot doesn't post the message to Pub/Sub</p>
  
  <p>Help me around</p>