Example of creating subscription for publications in the same cluster

The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/10/sql-createsubscription.html
Description:

This page:
https://www.postgresql.org/account/comments/new/10/sql-createsubscription.html/
explains that the CREATE SUBSCRIPTION command would hang if you tried to
create a subscription for a publication in the same cluter, and gives some
instructions to work around this limitation. It would be nice to have an
example for that (great learning tool..)