title: How to check in karate if a node contains the expected value from the json response
body: <p>The scenario is that I have got the following JSON response,say for eg : </p>
  
  <pre><code>[
      {
          "a": "a",
          "b": "a",
          "c": "a",
      }
      {
          "a": "ab",
          "b": "ab",
          "c": "ab",
      }
  
  ]
  </code></pre>
  
  <p>Now I want to check if the response contains "ab" in "b" node. 
  In Karate , I am not getting how to go about it.</p>
  
  <p>Given path 'url'
  When method get
  Then status 200
  And match response == <strong>??</strong></p>