code: func (c *Client) Stream(method, path string, in, out interface{}) (stream.Stream, error) {
  	return c.StreamWithHeader(method, path, make(http.Header), in, out)
  }
docs: // Stream returns a stream.Stream for a specific method and path. in is an
  // optional json object to be sent to the server via the body, and out is a
  // required channel, to which the output will be streamed.