o Moved injection of plugin/dependency management into isolated component and decoupled from processors. The new component resembles the ModelDefaultsInjector from 2.x but explicitly focuses on management information. Other defaults like the lifecycle induced plugins should be handled by another component.
maven/components/branches/MNG-2766/maven-model/src/main/java/org/apache/maven/model/merge/ModelMerger.java
maven/components/branches/MNG-2766/maven-model-builder/src/main/java/org/apache/maven/model/management/