BREAKING CHANGE

systems.dmx.core.ChildTopics

remove the 2 addDeletionRef() methods:

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

CODE TRANSFORMATION

Instead of

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

write

    topic.update(mf.newChildTopicsModel().addDeletionRef(compDefUri, ...));