The documentation statement explaining the shared option is contradicting with itself

[omnir95]

The following paragraph in the documentation is contradicting with itself:

shared (default False) – If True, a shared lock is taken. Any number of sessions can hold a shared lock; if another session attempts to take an exclusive lock, it will wait until all shared locks are released; if a session is holding a shared lock, it will block attempts to take a shared lock. If False (the default), an exclusive lock is taken.

The bold parts are the contradicting parts. How can any number of sessions hold a shared lock while holding a shared lock will block the attempts to take a shared lock?

[kamilturek]

@omnir95 Yeah, I also spotted this today. It's apparently wrong. I've prepared a PR to amend that.