title: How do I merge identical adjacent rows with dynamic row spans in Ag-Grid?
body: <p>Most examples of rowspanning I have seen involve hard-coded values.</p>
  <p>How would I create row-spans dynamically based on the column values? Specifically, I'd like to dynamically merge all adjacent identical rows into one cell, to get a result such as this:</p>
  <p><a href="https://i.stack.imgur.com/VB7lK.jpg" rel="nofollow noreferrer">Ag-Grid - Only Date rows are to be span</a></p>
  <p>Can the function logic to define a row-span access the values from other rows? Can it do so relative to itself (e.g. next row, prev row)?</p>