anchor.diff:              "code": 401
           }
   
  +# Group Service actions
  +
  +## List [/{service}/exec/ls/{path}]
  +
  +### List files from the authenticated user's cloud storage [GET]
  +
  ++ Response 200 (application/json; charset=utf-8)
  +
  +        [
  +            {
  +                "name": "a folder name",
  +                "bytes": 0,
  +                "modified": "Fri, 06 Dec 2013 08:28:02 +0000",
  +                "is_dir": true
  +            },
  +            {
  +                "name": "my sample file name.html",
  +                "bytes": 2162,
  +                "modified": "Thu, 30 Oct 2014 18:39:10 +0000",
  +                "is_dir": false
  +            }
  +        ]
  +
  ++ Response 401 (application/json; charset=utf-8)
  +
  +        {
  +            "success": false,
  +            "code": 401,
  +            "message": "User not logged in yet. You need to call the 'login' service first."
  +        }
  +
  
positive.code:             "authorize_url": "..."
          }
  
  ## User login [/*/login]
  
  ### Login after connection through oauth mechanism [GET]
  
  
negative.code:             "code": 401
          }
  
  ## Connect the user [/{service}/connect]
  
  ### Connect the user and start the oauth process [GET]
  
  