 class="tsd-parameters-title">Parameters</h4><ul class="tsd-parameter-list"><li><h5><span class="tsd-kind-parameter">idx</span>: <span class="tsd-signature-type">number</span></h5><div class="tsd-comment tsd-typography"><p>the non-negative zero-based integer row index.</p>
</div></li></ul></div><h4 class="tsd-returns-title">Returns <a href="RowColumnDefinition.html" class="tsd-signature-type tsd-kind-class">RowColumnDefinition</a></h4></li></ul></section></section></div><div class="col-sidebar"><div class="