title: AssertJ JSON property check
body: <p>I have JSONObject instance which contains some property,</p>
  
  <pre><code>{
  "name":"testName",
  "age":"23"
  }
  </code></pre>
  
  <p>i use the following assert, but it fails. Is this correct approach to test JSON in assertj.</p>
  
  <pre><code>assertThat(jsonObject).hasFieldOrProperty("name");
  </code></pre>