Examine source code of Tsukuba-syllabus

{
  "name": "Tsukuba-syllabus",
  "version": "1.0.4",
  "manifest_version": 2,
  "description": "manabaのコースページに、授業のシラバスに飛ばすボタンを作る",
  "content_scripts": [
    {
      "matches": [
        "https://manaba.tsukuba.ac.jp/ct/course_*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{5595575c-fba9-4868-b4e7-4cd4bd54fdd8}"
    }
  }
}