Examine source code of Clear Cache

{
  "name": "__MSG_extensionName__",
  "version": "4.9",
  "manifest_version": 2,
  "description": "__MSG_extensionDescription__",
  "homepage_url": "https://github.com/TenSoja/clear-cache",
  "author": "TenSoja",
  "icons": {
    "16": "icons/broom-16.png",
    "32": "icons/broom-32.png",
    "48": "icons/broom-48.png",
    "96": "icons/broom-96.png",
    "128": "icons/broom-128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options/options.html"
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/broom-16.png",
      "32": "icons/broom-32.png"
    },
    "default_title": "Clear Cache"
  },
  "permissions": [
    "browsingData",
    "contextMenus",
    "notifications",
    "storage",
    "tabs"
  ],
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "F9"
      },
      "description": "Shortcut for Clear Cache"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "clearcache@michel.de.almeida",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "default_locale": "en"
}