Edit: Universal Argument (C-u)
edit.universalArgument Start a numeric prefix argument for the next command — C-u, more C-u to multiply by four, or type digits.
How to run it
Open the command palette (M-x in the Emacs keymap) and search for Edit: Universal Argument (C-u), then press Enter. It also has a default keybinding:
| Emacs | C-u |