title: Verifying certain keys are present in rest assured response without iterating over the response n number of times
body: <p>Say that i have a response: </p>
  
  <pre><code>{
  "lotto":{
          "lottoId":5,
          "winning-numbers":[2,45,34,23,7,5,3],
          "winners":[{
                   "winnerId":23,
                   "numbers":[2,45,34,23,3,5]
                    },
                    {"winnerId":54,
                     "numbers":[52,3,12,11,18,22]
                    }]
          }
  }
  </code></pre>
  
  <p>I want to verify that winnerId and numbers are present in response but i don't want to iterate over the response twice because in my case the response is very big and I may have to validate hundreds of values and that will waste a lot of time.</p>