Hi,
Both the location and name of the linked to section make no sense to me:
https://www.postgresql.org/docs/current/functions-admin.html#FUNCTIONS-ADMIN-DBOBJECT
Neither of the tables listed there manage (cause to change) anything. They
are pure informational functions - size and path of objects respectively.
It belongs in the previous chapter "System Information Functions and
Operators" with a different name.
David J.