code: func (c *syncClient) Randomkey() (result string, err Error) {
  	var resp Response
  	resp, err = c.conn.ServiceRequest(&RANDOMKEY, [][]byte{})
  	if err == nil {
  		result = string(resp.GetBulkData())
  	}
  	return result, err
  
  }
docs: // Redis RANDOMKEY command.