docs: function getFailureMessage(exceptionMessage) {
              var msg = 'Snapsie failed: ';
              if (exceptionMessage) {
                  if (exceptionMessage ==
                      "Automation server can't create object") {
                      msg += 'Is it installed? Does it have permission to run '
                          + 'as an add-on? See http://snapsie.sourceforge.net/';
                  }
                  else {
                      msg += exceptionMessage;
                  }
              }
              else {
                  msg += 'Undocumented error';
              }
              return msg;
          }