Examine source code of J2C-Beta

{
  "manifest_version": 2,
  "name": "J2C-Beta",
  "version": "4.3.1",
  "description": "Jira Utilities",
  "icons": {
    "16": "icons/J2C_logo_16px.png",
    "32": "icons/J2C_logo.svg",
    "48": "icons/J2C_logo.svg",
    "128": "icons/J2C_logo.svg"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "https://tickets.soptim.de/*",
    "activeTab",
    "tabs",
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "configs.js",
        "utils.js",
        "content.js"
      ],
      "css": [
        "injection/branch_name_injection/injection.css"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_action": {
    "default_popup": "popup/popup.html"
  },
  "commands": {
    "my-command": {
      "suggested_key": {
        "default": "Alt+Shift+C"
      },
      "description": "Test Command"
    }
  },
  "web_accessible_resources": [
    "injection/branch_name_injection/branch_name_injection.html",
    "injection/j2c_logo_injection/j2c_logo_injection.html",
    "global.css",
    "content.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{b0fe7c51-0239-4c6a-ad62-b63e7722378b}"
    }
  }
}