How to 'undelete' an inadvertently deleted post?

[Lupp]

I inadvertently deleted a post and had already left the topic when I got aware of my mistake.
How can I make the deletion undone?
The topic was https://ask.libreoffice.org/en/question/247103/how-do-i-assign-a-keyboard-shortcut-to-the-increasedecrease-indent-buttons/?comment=247107#post-id-247107.
In fact I wanted to delete my own comment.

[LeroyG]

Lupp,

No one had commented until deleted? Do not appear in your activity?

[mariosv]

“If you throw it in the trash and it doesn’t give you creeps, it’s not important”