code: def subvol_quota(self, path, limit):
          
          args = {
              'path': path,
              'limit': limit,
          }
  
          self._subvol_quota_chk.check(args)
  
          self._client.sync('btrfs.subvol_quota', args)
docs: Apply a quota to a btrfs subvolume in the specified path
          :param path:  path to apply the quota for (it has to be the path of the subvol)
          :param limit: the limit to Apply