docs: def estimate(path):
      '''
      Estimate the space that an XFS filesystem will take.
      For each directory estimate the space that directory would take
      if it were copied to an XFS filesystem.
      Estimation does not cross mount points.
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' xfs.estimate /path/to/file
          salt '*' xfs.estimate /path/to/dir/*
      '''
      if not os.path.exists(path):
          raise CommandExecutionError("Path \"{0}\" was not found.".format(path))
  
      out = __salt__['cmd.run_all']("xfs_estimate -v {0}".format(path))
      _verify_run(out)
  
      return _xfs_estimate_output(out["stdout"])