Once this is an event, I think it would be nice if this were directly in `rover.vwf` instead of in `roverBlockly.vwf`.

And then I think that means that we're not currently using `roverBlockly.vwf`.  This gets back to the conversation about whether we need to use `executeBlocklyCmd` instead of calling methods directly.  Is the intent that `blocks.js` is not application dependent the way it is now?