code: func (c *PipelineClient) Do(req *Request, resp *Response) error {
  	return c.getConnClient().Do(req, resp)
  }
docs: // Do performs the given http request and sets the corresponding response.
  //
  // Request must contain at least non-zero RequestURI with full url (including
  // scheme and host) or non-zero Host header + RequestURI.
  //
  // The function doesn't follow redirects. Use Get* for following redirects.
  //
  // Response is ignored if resp is nil.
  //
  // It is recommended obtaining req and resp via AcquireRequest
  // and AcquireResponse in performance-critical code.