code: def start_datafeed(self, datafeed_id, body=None, params=None):
          
          if datafeed_id in SKIP_IN_PATH:
              raise ValueError(
                  "Empty value passed for a required argument 'datafeed_id'."
              )
          return self.transport.perform_request(
              "POST",
              _make_path("_ml", "datafeeds", datafeed_id, "_start"),
              params=params,
              body=body,
          )
docs: `<http://www.elastic.co/guide/en/elasticsearch/reference/current/ml-start-datafeed.html>`_
  
          :arg datafeed_id: The ID of the datafeed to start
          :arg body: The start datafeed parameters
          :arg end: The end time when the datafeed should stop. When not set, the
              datafeed continues in real time
          :arg start: The start time from where the datafeed should begin
          :arg timeout: Controls the time to wait until a datafeed has started.
              Default to 20 seconds