title: Safe Args: use list of parcelables
body: <p>I am using the Safe Args plugin with the new Navigation components for my Android project. Now I have an argument that is an array list of parcelables, is there a way to use this with the Safe Args Plugin?</p>
  
  <p>Something like <code>app:argType=ParcelableArray</code>. This should be possible since there are bundle methods like <code>putParcelableArrayList()</code>.</p>