We add it as a subtree where each element in the sequence has as its
name its number.

Change-Id: I9422777d887d899f76ad6d259631d15c2db53f03
Reviewed-on: https://gerrit.libreoffice.org/51967Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Tor Lillqvist <tml@collabora.com>
(cherry picked from commit 1bf2ed44)
Reviewed-on: https://gerrit.libreoffice.org/52091Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Miklos Vajna <vmiklos@collabora.co.uk>