Edit: Duplicate Line
edit.duplicateLine Duplicate the current line below it.
How to run it
Open the command palette (M-x in the Emacs keymap) and search for Edit: Duplicate Line, then press Enter. It also has a default keybinding:
| CUA | C-S-d |
| Sublime Text | C-S-d |
| VS Code | M-S-down |
| IntelliJ IDEA | C-d |