title: What is the onUI5Init global event
body: <p>Recently I came across the <a href="https://jsbin.com/wihiwuw/edit?html,js,output" rel="nofollow noreferrer">following JSBin</a>. In the 'JavaScript' section, one can notice the initialization happening inside a global <code>onUI5Init</code> listener. This surprised me a bit, because all the demos I've seen use <code>sap.ui.getCore().attachInit</code> or otherwise <code>attachInit</code> call to the core. Moreover, there seems to be no official documentation on this event.</p>
  <p>What does this approach do, does it execute before <code>attachInit</code> or does it have any advantages over <code>attachInit</code>? Is there some documentation I'm missing?</p>
  <p>Any info is appreciated.</p>