title: Forcing Paging Library DataSource refresh
body: <p>In my ViewModel, I load data using </p>
  
  <pre><code>private val pagingConfig = PagedList.Config.Builder()
      .setEnablePlaceholders(false)
      .setInitialLoadSizeHint(INITIAL_LOAD_SIZE_HINT)
      .setPageSize(PAGE_SIZE)
      .build()
  
  val notificationList = LivePagedListBuilder&lt;Long, Notification&gt;(dataSourceFactory, pagingConfig).build()
  </code></pre>
  
  <p>Which works fine. However, when my data changes, <code>LiveData&lt;PagedList&lt;Notification&gt;&gt;</code> does not get notified. Is there anything I can do to trigger <code>LiveData</code> refresh (the <code>ViewModel</code> knows when the change occurs). </p>