Keybinding for Ctrl + Enter (Ctrl + Carriage return)?

Is there a keybinding for when the user presses the combination Ctrl + Enter (Ctrl + Return)?

I looked at the documentation and the keys.py file and found the combination of Ctrl with basically everything, except Enter.

I know of "c-m", but this is only Enter. I tried to emulate hitting Ctrl and later Enter with something like

@kb.add("control", "c-m")  # does not exist

but it does not work as well.