protected CDefaultLabelEventHandler createNodeKeyHandler(
      final AbstractZyGraph<NodeType, EdgeType> graph) {
    return new CDefaultLabelEventHandler(graph);
  }
Initializes the default behavior of the edit mode.
java/zylib/src/main/java/com/google/security/zynamics/zylib/yfileswrap/gui/zygraph/editmode/ZyEditMode.java