BREAKING CHANGE

systems.dmx.core.ChildTopics

remove the 2 setDeletionRef() methods:

ChildTopics setDeletionRef(String compDefUri, long refTopicId);
ChildTopics setDeletionRef(String compDefUri, String refTopicUri);

CODE TRANSFORMATION

Instead of

    topic.getChildTopics().setDeletionRef(compDefUri, ...);

write

    topic.update(mf.newChildTopicsModel().set(compDefUri, mf.newTopicDeletionModel(...)));

Note: "newTopicDeletionModel" is about to get a shorter Name, e.g. "delRef"