anchor.diff:  +
   You should see an output like the following (formatted for the sake of readability):
   +
  -[source%nowrap,json]
  +[source%nowrap,json,subs="attributes"]
   ----
   # Message 1
   {
  
positive.code:         "email": "gbailey@foobar.com"
      },
      "source": {
          "name": "dbserver1",
          "server_id": 0,
          "ts_sec": 0,
  
negative.code:         "email": "sally.thomas@acme.com"
      },
      "source": {
          "version": "{debezium-version}",
          "connector": "mysql",
          "name": "dbserver1",
          "server_id": 0,
          "ts_sec": 0,
  