@Override
public void keyAdded(MapEvent<String, Integer> e) {
int insertIndex =
Collections.binarySearch(types, e.getKey(), Comparators.toStringIgnoreCaseCollator());
if (insertIndex < 0) {
insertIndex = -(insertIndex + 1);
}
types.add(insertIndex, e.getKey());
CompanionTypeNode child = new CompanionTypeNode(e.getKey());
insertNodeInto(child, this, insertIndex);
}
