docs: def is_proxy():
      '''
      Return True if this minion is a proxy minion.
      Leverages the fact that is_linux() and is_windows
      both return False for proxies.
      TODO: Need to extend this for proxies that might run on
      other Unices
      '''
      import __main__ as main
      # This is a hack.  If a proxy minion is started by other
      # means, e.g. a custom script that creates the minion objects
      # then this will fail.
      ret = False
      try:
          # Changed this from 'salt-proxy in main...' to 'proxy in main...'
          # to support the testsuite's temp script that is called 'cli_salt_proxy'
          #
          # Add '--proxyid' in sys.argv so that salt-call --proxyid
          # is seen as a proxy minion
          if 'proxy' in main.__file__ or '--proxyid' in sys.argv:
              ret = True
      except AttributeError:
          pass
      return ret