anchor.diff:  
   ## BadRequestResponse (object)
   + code: `E001` (string, required) - TODO sample error code
  -+ message: `Id cannot be null` (string, required) - TODO sample error message - human readable++ message: `Id cannot be null` (string, required) - TODO sample error message - human readable
  
positive.code: + deckId: `291acb97-6f50-4522-8049-aee0b4e16b42` (string, required) - Deck UUID, 36 chars, 8-4-4-4-12 chars
  
  ### TipWithoutId (object)
  + prompt: `Sample prompt` (string) - prompt attribute for Tip
  
  ### Tip (TipWithoutId)
  + id: `12345678-9012-3456-7890-123456789012` (string, required) - tip UUID, 36 chars, 8-4-4-4-12 chars
  
negative.code: 
  # Change log
  
  ## 28/04/2016 arka
   - fixed tips to current state
  ## 28/04/2016 toja
   - name of parameter isEnabled changed to flashcardsCount
  ## 17/04/2016 toja
  