partman wiki: recipe example for creating an encrypted LVM boot disk?

[Harald Dunkel <harri@afaics.de>]

Hi folks,

hopefully I am not too blind to see, but apparently the recipes on
https://wiki.debian.org/DebianInstaller/Partman seem to lack an
example how to use an encrypted partition either for LVM, or for
creating a nested GPT partition.

Something like
https://www.linuxjournal.com/content/preseeding-full-disk-encryption ?

Regards
Harri