"Disconnect session" toolbar button

Hello, in the menu "Tabs" there is the option "Disconnect session" (or if the session is disconnected, it says "Reconnect session").
Sadly, in the "Sessions and Tabs" toolbar this button doesn't exist. It's useful to disconnect some tabs quickly (without closing the tabs) because it saves bandwidth. I believe this button would not be difficult to implement at all.
Thanks!
Have a good day!

Are you aware that the command is available in the tab's context menu?