s-site tracking.</span></div></td><td><div class='dataPoint tooltipParent bad'
> &nbsp;
<span class="tooltipText">write: (key) =&gt; new Promise((resolve, reject) =&gt; {
      let img = document.createElement(&quot;img&quot;);
      document.body.appendChild(img);
      img.addEventListener(&quot;load&quot;, () =&gt; resolve(key), {once: true});
      img.src = testURI(&quot;resource&quot;, &quot;image&quot;, key);
    })

read: async (key) =&gt; {
      let img = document.createElement(&quot;img&quot;);
 