ChangesGroupingSupport () { ChangesGroupingSupport groupingSupport = new ChangesGroupingSupport(myProject, this, false); ChangesTree.installGroupingSupport(this, groupingSupport, () -> ShelveChangesManager.getInstance(myProject).getGrouping(), (newGrouping) -> ShelveChangesManager.getInstance(myProject).setGrouping(newGrouping)); return groupingSupport; }