{ "items": [ { "label": "Level 1", "icon": "chromium-browser", "items": [ { "label": "Level 2-1", "icon": "chromium-browser", "items": [ { "label": "Chromium Browser", "icon": "chromium-browser", "exec": "/usr/bin/chromium-browser" } ] }, { "label": "Level 2-2", "icon": "chromium-browser", "items": [ { "label": "Level 3-1", "icon": "chromium-browser", "items": [ { "label": "Chromium Browser", "icon": "chromium-browser", "exec": "/usr/bin/chromium-browser" } ] } ] } ] } ] }