Doctest for _pushable_messages_join
Doctest for _pushable_messages_join

sprucedev/DockCI,sprucedev/DockCI-Agent,RickyCook/DockCI,RickyCook/DockCI,sprucedev/DockCI,RickyCook/DockCI,sprucedev/DockCI-Agent,sprucedev/DockCI,RickyCook/DockCI,sprucedev/DockCI