I'm trying to upgrade a Nuxeo instance from 5.5 to a more recent version. I'm totally new to Nuxeo so please do forgive my ignorance. Somehow I was able to make progress but we found out that some of our relation data was gone. Reading the upgrade notes, I found the issue to be this: https://jira.nuxeo.com/browse/NXP-10350 It also offers the solution. But I have no idea where those snippets go. Could someone tell me where they go and if they have to be split up in separate file?

I believe I'm a little bit further. I found out about the 'Nuxeo Platform Explorer'. I can generate contributions there. But Still, I don't know where they go. Do I need to make my own bundle to implement a contribution?