title: Row count in aggrid with pagination
body: <p>I am using aggrid with pagination(client side).</p>
  <p>I need to get the count of rows present in current page.</p>
  <p>When i use the below apis it always gives me count of all rows present in all pages.</p>
  <pre><code>gridApi.paginationGetRowCount()
  
  gridApi.getDisplayedRowCount()
  
  gridApi.paginationProxy.masterRowCount
  </code></pre>