title: Eclipse e4 RCP - setting titlebar text at runtime
body: <p>I would like to be able to change the titlebar text at runtime. Typically I want to do this when my application opens a file, so that I will have Application Name - File Name in the titlebar.</p>
  
  <p>I've read about people using an <code>ApplicationWorkbenchWindowAdvisor</code> to get hold of the <code>IWorkbenchWindowConfigurer</code>, and then using that to set the title, but I don't actually know where or how to get hold of the <code>ApplicationWorkbenchWindowAdvisor</code>, or even whether this is a class I need to write.</p>
  
  <p>Currently, the title is set via the appName property in my plugin.xml only.</p>
  
  <p>Can someone please show an example if its usage?</p>