anchor.diff:  {
      "jsonrpc" : "2.0",
      "id" : 1,
  -   "result" : "ACK"
  +   "result" : {}
   }
   
   ----
  
positive.code: ** *port_id* ['int'] - port id associated with this stream
  ** *stream_id* ['int'] - stream id associated with the stream object
  ** *stream* - object of type xref:stream_obj['stream']
  * *Result* ['string'] - "ACK" in case of success
  
  ==== Object type 'stream' anchor:stream_obj[]
  
  
negative.code: ** *handler* ['string'] - unique connection handler
  ** *port_id* ['int'] - port id on which to start traffic
  
  * *Result* ['object'] - {}
  
  [source,bash]
  ----
  