anchor.diff:  === user.join.request
   [source,json]
   {
  -    'id': '7686d130-2223-4769-ab9f-5cebcf795e80',
  -    'password': 'secret'
  +    "id": "7686d130-2223-4769-ab9f-5cebcf795e80",
  +    "password": "secret"
   }
   
   === user.join.response
  
positive.code: === user.create.request
  [source,json]
  {
     'name': 'my name' // min. 3 characters; max. 64 characters;
     'password': 'secret' // min. 8 characters;
  }
  
  === user.create.response
  [source,json]
  {
      'id': '7686d130-2223-4769-ab9f-5cebcf795e80'
  }
  
  === user.created
  [source,json]
  {
      'id': '7686d130-2223-4769-ab9f-5cebcf795e80'
      'name': 'my name'
  }
  
  === user.list.request
  
negative.code: === group.poker.bet.request
  [source,json]
  {
      "id": "7686d130-2223-4769-ab9f-5cebcf795e80",
      "bet": 13 // allowed values: -1, 0.5, 1, 2, 3, 5, 8, 13, 20, 30, 40, 100
  }
  
  === group.poker.bet.response
  