This is supposed to send fake join/quit messages in DiscordSRV on reappear/vanish.
The messages can be changed in the messages.yml file (after it's been recreated or after you've copied in the new messages from the default messages file in the resource description)
DiscordSRV needs to be up-to-date
Fake join/quit messages need to be enabled in PV and there is a bypass for the silent flag (-s)