I dont quite want to get the parent, but rather the "brothers".
Like, on the default template, when we enter any album, we have their thumbnails.
I`d like to still have the thumbnails, even when viewing any given album.
Only in this case, it would be the other subalbums. (on the third part of the layout sketch, we are viewing the pictures on subalbum1, and can still view the subalbums thumbnails)