Are there commands for execute XFCE's menu entries to reboot or power off/shut down?

Question

There is Herunterfahren(DE)/Shut Down and Neustarten (DE)/Reboot:

Is it possible to execute these GUI entries from the command line? If so, what exactly are the commands?

I already checked XFCE's docs page for the power manager, but as far as I understood it, these commands aren't listed there.

Answer 1

From https://askubuntu.com/a/771187/158442:

I think what you want is xfce4-session-logout (online manpage).

Excerpt from the manpage (reformatted, filtered):

The xfce4-session-logout command allows you to programmatically logout
   from your Xfce session. It requests the session manager to display  the
   logout  confirmation  screen,  or,  if  given  one  of the command-line
   options below, causes the session manager to take the requested  action
   immediately.

OPTIONS:
   --logout     Log out without displaying the logout dialog.
   --halt       Halt without displaing the logout dialog.
   --reboot     Reboot without displaying the logout dialog.
   --suspend    Suspend without displaying the logout dialog.
   --hibernate  Hibernate without displaying the logout dialog.
   --fast       Do  a  fast shutdown.  This instructs the session manager not to
                save the session, but instead to quit everything quickly.

• So to shut down: xfce4-session-logout --halt

• To reboot: xfce4-session-logout --reboot

To get the dialogue where one can pick an action manually, run it without arguments:

xfce4-session-logout