Only getURL() and getTables() is custom, the rest can be shared.

Change-Id: I9d282a30f722bce0c05b37c7d005c84193e01b7c
Reviewed-on: https://gerrit.libreoffice.org/42152Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Jenkins <ci@libreoffice.org>