Unfortunately not.  I'm waiting to set the event handler on the target node, but the issue I ran into is that before the scene is ready, the camera has not been attached to its parent, so it can't find the target node.  My first pass was to set the event handler the first time the node was found, but that led meant the `getTargetNode` function had a side effect of setting an event handler.  It was pretty ugly.  This was the clearest option I could think of, although I'm open to others.