Examine source code of Code Clipboard Manager

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  "description" : "__MSG_extensionDescription__" ,
  "permissions" : [
    "storage" 
  ],
  "action" : {
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    "default_icon" : {
      "128" : "icons/icon-128.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c3d9f5a2-1b8d-3e9a-5f2d-9b9a92dcf8cd}"
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}