1  'menu': [
 2    {
 3      'label': 'Packages'
 4      'submenu': [
 5        'label': 'Git Diff'
 6        'submenu': [
 7          { 'label': 'Move to Next Diff', 'command': 'git-diff:move-to-next-diff' }
 8          { 'label': 'Move to Previous Diff', 'command': 'git-diff:move-to-previous-diff' }
 9          { 'label': 'Toggle Diff List', 'command': 'git-diff:toggle-diff-list' }
10        ]
11      ]
12    }
13  ]