code: def switch_to_app(self, package):
          
          log.debug("switching to app '{}'...".format(package))
          cmd, url = DEVICE_URLS["switch_to_app"]
          widget_id = self._get_widget_id(package)
  
          url = url.format('{}', package, widget_id)
  
          self.result = self._exec(cmd, url)
docs: activates an app that is specified by package. Selects the first
          app it finds in the app list
  
          :param package: name of package/app
          :type package: str
          :return: None
          :rtype: None