Examine source code of Bugzilla Context Menu

{
  "manifest_version": 2,
  "name": "Bugzilla Context Menu",
  "description": "Right-click to search highlighted text in Bugzilla",
  "version": "1.2resigned1",
  "applications": {
    "gecko": {
      "strict_min_version": "55.0a1",
      "id": "{088d3c6d-a9c0-489a-a826-9c148256b5cd}"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "contextMenus",
    "activeTab"
  ],
  "icons": {
    "16": "icons/page-16.png",
    "32": "icons/page-32.png",
    "48": "icons/page-48.png"
  }
}