Do not pass this as argument of new_ of One2Many
211e8f0bc762 removed the event argument but the conversion to arrow function added this as argument.
This instance will be upgraded to Heptapod 1.5.0rc2 (GitLab 16.11.1) on 2024-05-10 at 18:00 UTC+2
211e8f0bc762 removed the event argument but the conversion to arrow function added this as argument.