docs: def list_patterns(refresh=False, root=None):
      '''
      List all known patterns from available repos.
  
      refresh
          force a refresh if set to True.
          If set to False (default) it depends on zypper if a refresh is
          executed.
  
      root
          operate on a different root directory.
  
      CLI Examples:
  
      .. code-block:: bash
  
          salt '*' pkg.list_patterns
      '''
      if refresh:
          refresh_db(root)
  
      return _get_patterns(root=root)