I am trying to build a phabricator bot that sends messages to jabber chat members whenever there are new stories in phabricator. I know what the other fields in the bot configuration json file mean. I want to know what the "join" and "notification.channels" field signify. I looked at the documentation but these two fields have not been explained. The default value in the example_config.json are
"join" : [ "#phabot-test" ],
"notification.channels" : ["#phabot-test"]