title: Get a reference to a Backbone Marionette module without creating it
body: <p>I have a Backbone/Marionette application with asynchronous loading of modules.  That is, all modules are defined with <code>startWithParent = false</code> and I only load them as needed.  However, at certain points in the application, I need to get a reference to a module, but I have no idea if it was loaded yet.  Unfortunately, according to the docs, the command to get a reference to a module...</p>
  
  <pre><code>var module = App.module('Foobar');
  </code></pre>
  
  <p>...will also create a module with that name if one doesn't already exist.  This is problematic because the newly created module is empty.  Even worse, later in the application when I need to actually load the module for real, the module has already been created and the way Marionette is designed, you can't overwrite the module once it's been created.</p>
  
  <p>So my question is, is there any method or workaround, to get a reference to a module without creating it?</p>