means to "look up" (i.e. instantiate and / or retrieve) objects.</p>
<blockquote>
  <p><em>Note: Although an <code>Application</code> serves as the primary registry for an app,
each <code>ApplicationInstance</code> can also serve as a registry.
Instance-level registrations are useful for providing instance-level customizations,
such as A/B testing of a feature.</em></p>
</blockquote>
<h2 id="toc_factory-registrations">Factory Registrations <a href="#toc_factory-registrations"><svg xmlns="http://www.w3.org/2