With this addition it would be possible to get the server's total amount of ticks it has processed since its start.

This could for example be used to check how many ticks have passed since some event or since server start (which depends on the server's dynamic ticks-per-second it can achieve).

Implemented by https://hub.spigotmc.org/stash/projects/SPIGOT/repos/bukkit/pull-requests/245/ and https://hub.spigotmc.org/stash/projects/SPIGOT/repos/craftbukkit/pull-requests/331/