title: Best way to change data on FirebaseRecyclerAdapter
body: <p>currently I am using <strong>FirebaseRecyclerAdapter</strong> to represent data on a RecyclerView using the following Firebase query:</p>
  
  <pre><code>postsQuery = mDatabase.child("lists_new”).orderByKey().limitToFirst(10);
  </code></pre>
  
  <p>My RecyclerView has a header with 2 buttons: <strong>New List, Old List</strong>.
  New list is loaded by default, and my question is,  when the user taps the Old List button, what is the <strong><em>most efficient way to replace the new list with old list</em></strong>.</p>
  
  <p>The Firebase query for the old list looks like this:</p>
  
  <pre><code>postsQuery = mDatabase.child("lists_old”).orderByKey().limitToFirst(10);
  </code></pre>
  
  <p>Note: <em>both new list and the old list has the same data types, i.e. they share the same Java POJO class and the the same layout.</em></p>