code: def _is_default(path, dest, name):
      '''
      Check if the subvolume is the current default.
      '''
      subvol_id = __salt__['btrfs.subvolume_show'](path)[name]['subvolume id']
      def_id = __salt__['btrfs.subvolume_get_default'](dest)['id']
      return subvol_id == def_if _is_default(path, dest, name):
      '''
      Check if the subvolume is the current default.
      '''
      subvol_id = __salt__['btrfs.subvolume_show'](path)[name]['subvolume id']
      def_id = __salt__['btrfs.subvolume_get_default'](dest)['id']
      return subvol_id == def_id
docs: Check if the subvolume is the current default.