title: Inject script with ScriptInjector
body: <p>What is the exact <code>ScriptInjector</code> code for this HTML script tag:</p>
  
  <pre><code>&lt;script&gt;navigator.id || document.write('&lt;script src="https://login.persona.org/include.js"&gt;&lt;\/script&gt;')&lt;/script&gt;
  </code></pre>