{"action":"opened","issue":{"url":"https://api.github.com/repos/TransformationToolContest/ttc2019-live/issues/3","repository_url":"https://api.github.com/repos/TransformationToolContest/ttc2019-live","labels_url":"https://api.github.com/repos/TransformationToolContest/ttc2019-live/issues/3/labels{/name}","comments_url":"https://api.github.com/repos/TransformationToolContest/ttc2019-live/issues/3/comments","events_url":"https://api.github.com/repos/TransformationToolContest/ttc2019-live/issues/3/events","html_url":"https://github.com/TransformationToolContest/ttc2019-live/issues/3","id":468534845,"node_id":"MDU6SXNzdWU0Njg1MzQ4NDU=","number":3,"title":"Make change models refer to the original model","user":{"login":"bluezio","id":46504,"node_id":"MDQ6VXNlcjQ2NTA0","avatar_url":"https://avatars2.githubusercontent.com/u/46504?v=4","gravatar_id":"","url":"https://api.github.com/users/bluezio","html_url":"https://github.com/bluezio","followers_url":"https://api.github.com/users/bluezio/followers","following_url":"https://api.github.com/users/bluezio/following{/other_user}","gists_url":"https://api.github.com/users/bluezio/gists{/gist_id}","starred_url":"https://api.github.com/users/bluezio/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/bluezio/subscriptions","organizations_url":"https://api.github.com/users/bluezio/orgs","repos_url":"https://api.github.com/users/bluezio/repos","events_url":"https://api.github.com/users/bluezio/events{/privacy}","received_events_url":"https://api.github.com/users/bluezio/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2019-07-16T09:05:18Z","updated_at":"2019-07-16T09:05:18Z","closed_at":null,"author_association":"COLLABORATOR","body":"Georg rightly reported that the change model should not refer to the mutated model, but rather to the original model. Doing this requires a few changes to the change metamodel and the DocBook metamodel, however. DocBook entities need to have unique UUIDs, and the change model must use containment to represent new elements.\r\n\r\nAfter these changes are done, it should be possible to \"play back\" the change model on top of the original model, giving us the mutated model."}}
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