Examine source code of Alt+N: Skip Episode

{
  "manifest_version": 2,
  "name": "Alt+N: Zur nächsten Anime-Episode",
  "version": "1.2",
  "description": "Springt mit Alt+N zur nächsten Episode oder Staffel auf s.to / aniworld.to.",
  "permissions": [
    "tabs",
    "*://s.to/*",
    "*://aniworld.to/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "commands": {
    "jump-next": {
      "suggested_key": {
        "default": "Alt+N"
      },
      "description": "Springt zur nächsten Episode"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6ccff1c7-cd3e-49af-8e85-ccdf99bf7eb6}"
    }
  }
}