Hi,
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I was reading https://www.postgresql.org/docs/current/postgres-fdw.html#POSTGRES-FDW-OPTIONS-REMOTE-EXECUTION and found that it mentions that Immutable Functions and Operators can be pushed down using `extensions` option for foreign server.
But it does not mention about TYPE. In the shippable.c/lookup_shippable() function, I found that type is also pushed down.
Does this require updating the docs? Can I raise a PR to do so? Thank you! :)
Regards
Rajan Pandey
