Atom editor: How do I change toggle-line-comment in the keymap?

Question

This here is what I come up with this far, but can't get it to work

'.workspace .editor':
  'cmd-7': 'unset!'
  'cmd-7': 'editor:toggle-line-comment'

Answer 1

The following works for me in Atom v1.3.2:

'atom-workspace atom-text-editor:not([mini])':
  'cmd-7': 'editor:toggle-line-comments'