Showing the parent message indicator in the main message feed
Part of #741 (closed)
The parent message indicator shows to the user if the message in the main message feed has a thread attached to it and how many messages are in that thread.
![](/-/project/3601513/uploads/d741739fdc262cb0f552f37f43dba294/Screenshot_2019-06-24_at_13.06.05.png)
- Adding
threadMessageCount
to the parent message, creation of a child message increments it, deletion decrements it