title: CollapsingToolbarLayout subtitle
body: <p>Am I able to set the title of a <a href="https://developer.android.com/reference/android/support/design/widget/CollapsingToolbarLayout.html" rel="noreferrer"><code>CollapsingToolbarLayout</code></a> via the <a href="https://developer.android.com/reference/android/support/design/widget/CollapsingToolbarLayout.html#setTitle(java.lang.CharSequence)" rel="noreferrer"><code>setTitle</code></a> method? </p>
  
  <p>Is there also a way to set a subtitle?</p>