title: JSON Array Retrofit and display it on a recyclerview Android Java
body: <p>I'm trying to implement a @GET request but I'm getting a null response. I'm familiar with implementing a response body with the following</p>
  <pre><code>&quot;billers&quot;: [
      {
          &quot;name&quot;: &quot;Biller full name&quot;,
          &quot;slug&quot;: &quot;biller-short-name&quot;,
          &quot;fields&quot;: {
              &quot;FieldName&quot;: {
                  &quot;type&quot;: &quot;can be textfield, date, selectable or hidden&quot;,
                  &quot;required&quot;: true,
                  &quot;placeholder&quot;: &quot;This is a field&quot;,
                  &quot;defaultValue&quot;: &quot;value1&quot;
                  &quot;regex&quot;: &quot;only appears if the type is textfield e.g. ^[-a-zA-Z .]{1,100}$&quot;,
                  &quot;dateFormat&quot;: &quot;only appears if type is date e.g. yyyy-MM-dd&quot;,
                  &quot;values&quot;: [
                      &quot;value1&quot;: &quot;only appears if type is selectable&quot;,
                      &quot;value2&quot;: &quot;value 2&quot;
                  ]
              }
          }
  ]
  </code></pre>
  <p>but this is my first time implementing a response like this</p>
  <pre><code>[
  {
      &quot;name&quot;: &quot;Category full name&quot;,
      &quot;slug&quot;: &quot;category-short-name&quot;,
      &quot;iconUrl&quot;: {
        &quot;android&quot;: {
          &quot;xhdpi&quot;: &quot;xhdpi category icon url&quot;,
          &quot;mdpi&quot;: &quot;mdpi category icon url&quot;,
          &quot;hdpi&quot;: &quot;hdpi category icon url&quot;
        },
        &quot;ios&quot;: {
          &quot;3x&quot;: &quot;3x biller icon url&quot;,
          &quot;retina&quot;: &quot;retina biller icon url&quot;,
          &quot;nonRetina&quot;: &quot;non-retina icon image url&quot;
        }
      }
    }
  ]
  </code></pre>
  <p>Here are my classes</p>
  <p><a href="https://i.stack.imgur.com/i232H.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/i232H.png" alt="enter image description here" /></a></p>
  <p><a href="https://i.stack.imgur.com/OElTC.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/OElTC.png" alt="enter image description here" /></a></p>
  <p><a href="https://i.stack.imgur.com/9eOqj.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9eOqj.png" alt="enter image description here" /></a></p>
  <p>Here is my error, I get a 200 calling the api, but when I try to display it on a recyclerview, it says that the response is null</p>
  <p><a href="https://i.stack.imgur.com/2SvSK.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/2SvSK.png" alt="enter image description here" /></a></p>