code: async def browse(self, device):
          
          device = self._find_device(device)
          if not device.is_mounted:
              self._log.error(_("not browsing {0}: not mounted", device))
              return False
          if not self._browser:
              self._log.error(_("not browsing {0}: no program", device))
              return False
          self._log.debug(_('opening {0} on {0.mount_paths[0]}', device))
          self._browser(device.mount_paths[0])
          self._log.info(_('opened {0} on {0.mount_paths[0]}', device))
          return True
docs: Launch file manager on the mount path of the specified device.
  
          :param device: device object, block device path or mount path
          :returns: whether the program was successfully launched.