docs: def main(args=None):
      """ Performs an action against a Streaming Analytics service.
      """
      streamsx._streams._version._mismatch_check('streamsx.topology.context')
      try:
          sr = run_cmd(args)
          sr['return_code'] = 0
      except:
          sr = {'return_code':1, 'error': sys.exc_info()}
      return sr